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OCCASIONAL PAPERS


of the
MUSEUM OF NATURAL HISTORY
—The University of Kansas
Lawrence, Kansas


NUMBER 2APRIL 29, 1971

NUMBER 2APRIL 29, 1971



NOTEWORTHY RECORDS OF BATS FROM
NICARAGUA, WITH A CHECKLIST OF
THE CHIROPTERAN FAUNA OF THE COUNTRY

By

J. Knox Jones, Jr., __A_TAG_PLACEHOLDER_0__ James Dale Smith, __A_TAG_PLACEHOLDER_1__
Ronald W. Turner __A_TAG_PLACEHOLDER_2__

 

Nicaragua occupies a strategic position in Central America with respect to mammalian distributional patterns, but relatively little has been published concerning the fauna of the country and its zoogeographic relationships. The present paper records information on distribution, variation, and natural history of 40 species of bats from Nicaragua, 14 of which are here recorded for the first time from the country. Appended is a checklist of the chiropteran fauna of Nicaragua in which only primary literature with actual reference to specimens from the republic is cited.

Nicaragua is strategically located in Central America regarding mammal distribution patterns, but not much has been published about the country's wildlife and its zoogeographic relationships. This paper presents information on the distribution, variation, and natural history of 40 bat species from Nicaragua, 14 of which are being reported for the first time in the country. Included is a checklist of Nicaragua's bat fauna, which only cites primary literature that directly references specimens from the country.

The specimens upon which this report is based are, with few exceptions, in the collections of the Museum of Natural History of The University of Kansas. Some of our material was obtained in 1956 by J. R. and A. A. Alcorn, field representatives of the Museum and sponsored by the Kansas University Endowment Association; most of the specimens, however, were obtained by field parties of which we were members that worked in Nicaragua in 1964, 1966, 1967, and 1968 under the aegis of a contract (DA-49-193-MD-2215) between the U.S. Army Medical Research and Development Command and The University of Kansas. Place-names associated with localities mentioned in the text from which specimens at Kansas were collected are plotted on Fig. 1.

The specimens that this report is based on are mostly in the collections of the Museum of Natural History at the University of Kansas, with a few exceptions. Some of our samples were collected in 1956 by J. R. and A. A. Alcorn, who were field representatives of the Museum and sponsored by the Kansas University Endowment Association. However, most of the specimens were gathered by field teams that we were part of, which worked in Nicaragua in 1964, 1966, 1967, and 1968 under a contract (DA-49-193-MD-2215) between the U.S. Army Medical Research and Development Command and the University of Kansas. Place names related to the locations from which specimens were collected in Kansas are shown on Fig. 1.

Map of Nicaragua

Fig. 1.—Map of Nicaragua showing location of place-names associated with specimens reported in this paper. Localities, identified by number, are as follows: I, Potosí; 2, Cosigüina; 3, Hda. Bellavista, Volcán Casita; 4, Chinandega; 5, San Antonio; 6, Jalapa; 7, Condega; 8, Yalí; 9, Santa María de Ostuma; 10, San Ramón; 11, Matagalpa; 12, Darío; 13, Esquipulas; 14, Santa Rosa; 15, Boaco; 16, Teustepe; 17, Tipitapa; 18, Sabana Grande; 19, Managua; 20, Cuapa; 21, Villa Somoza; 22, Hato Grande; 23, Diriamba; 24, Guanacaste; 25, Mecatepe; 26, Nandaime; 27, Alta Gracia, Isla de Ometepe; 28, Mérida, Isla de Ometepe; 29, Rivas; 30, San Juan del Sur; 31, Sapoá; 32, Bonanza; 33, El Recreo; 34, Cara de Mono.

Fig. 1.—Map of Nicaragua showing the location of place names linked to the specimens mentioned in this paper. The localities, identified by number, are as follows: 1, Potosí; 2, Cosigüina; 3, Hda. Bellavista, Volcán Casita; 4, Chinandega; 5, San Antonio; 6, Jalapa; 7, Condega; 8, Yalí; 9, Santa María de Ostuma; 10, San Ramón; 11, Matagalpa; 12, Darío; 13, Esquipulas; 14, Santa Rosa; 15, Boaco; 16, Teustepe; 17, Tipitapa; 18, Sabana Grande; 19, Managua; 20, Cuapa; 21, Villa Somoza; 22, Hato Grande; 23, Diriamba; 24, Guanacaste; 25, Mecatepe; 26, Nandaime; 27, Alta Gracia, Isla de Ometepe; 28, Mérida, Isla de Ometepe; 29, Rivas; 30, San Juan del Sur; 31, Sapoá; 32, Bonanza; 33, El Recreo; 34, Cara de Mono.

In the accounts that follow, departments in Nicaragua are listed alphabetically, but localities within each department are arranged from north to south; elevations are given in meters or feet, depending on which was used on specimen labels. All specimens are in the Museum of Natural History of The University of Kansas unless noted otherwise. We are indebted to Drs. Charles O. Handley, Jr., and Ronald Pine of the U.S. National Museum (USNM) for lending us certain critical specimens.

In the following accounts, the departments in Nicaragua are listed in alphabetical order, while the localities within each department are organized from north to south; elevations are provided in meters or feet, based on what was used on the specimen labels. All specimens are housed in the Museum of Natural History at The University of Kansas unless stated otherwise. We thank Drs. Charles O. Handley, Jr., and Ronald Pine of the U.S. National Museum (USNM) for lending us some important specimens.

 


 1 Curator, Division of Mammals, Museum of Natural History, University of Kansas.

1 Curator, Mammals Division, Natural History Museum, University of Kansas.

 2 Assistant Professor, Department of Biology, California State College, Fullerton, California.

2 Assistant Professor, Department of Biology, California State University, Fullerton, California.

 3 Assistant Professor, Department of Biology, St. Benedicts College, Atchison, Kansas.

3 Assistant Professor, Department of Biology, St. Benedict's College, Atchison, Kansas.


ACCOUNTS OF SPECIES

SPECIES ACCOUNTS

Saccopteryx leptura (Schreber, 1774)

Saccopteryx leptura (Schreber, 1774)

Two specimens from El Paraíso, 1 km N Cosigüina, 20 m, Chinandega, on the Cosigüina Peninsula, provide the fourth locality of record for this white-lined bat in Nicaragua. Jones (1964a:506) and Davis et al. (1964:375) earlier reported a total of eight specimens from the departments of Managua and Zelaya. The species is known as far north in Middle America as Chiapas (Carter et al., 1966:489).

Two specimens from El Paraíso, 1 km N of Cosigüina, 20 m, Chinandega, on the Cosigüina Peninsula, mark the fourth recorded location for this white-lined bat in Nicaragua. Jones (1964a:506) and Davis et al. (1964:375) previously reported a total of eight specimens from the departments of Managua and Zelaya. The species is known to range as far north in Middle America as Chiapas (Carter et al., 1966:489).

Our two bats, both females, were shot on the evening of 1 March 1968 as they foraged around a yard light. One carried an embryo that measured 8 mm (crown-rump), whereas the other was reproductively inactive.

Our two female bats were shot on the evening of March 1, 1968, while they were foraging around a yard light. One had an embryo that measured 8 mm (crown-rump), while the other was not reproductively active.

Peropteryx macrotis macrotis (Wagner, 1843)

Peropteryx macrotis macrotis (Wagner, 1843)

Four females (one young and three adult) captured 5 km N and 9 km E Condega, 800 m, in Madriz, on 23 June 1964, provide the first record of this small sac-winged species from Nicaragua. The bats were shot from daytime roosts in small, well-lighted, cave-like spaces formed among immense blocks of granite in a small patch of tropical deciduous forest surrounded by extensive pine-oak woodland. None of the adult females was reproductively active. Glossophaga soricina, Diphylla ecaudata, and a large nursery colony of Desmodus rotundus were found in association with the Peropteryx. Measurements of our specimens agree closely with those reported for material from El Salvador (Felten, 1955:284) and Costa Rica (Starrett and Casebeer, 1968:3-4).

Four females (one young and three adults) were captured 5 km North and 9 km East of Condega, at an elevation of 800 m, in Madriz, on June 23, 1964. This marks the first record of this small sac-winged species in Nicaragua. The bats were shot from daytime roosts in small, well-lit, cave-like areas created among huge blocks of granite in a small patch of tropical deciduous forest, surrounded by extensive pine-oak woodlands. None of the adult females was reproductively active. Glossophaga soricina, Diphylla ecaudata, and a large nursery colony of Desmodus rotundus were found in association with the Peropteryx. Measurements of our specimens closely match those reported for samples from El Salvador (Felten, 1955:284) and Costa Rica (Starrett and Casebeer, 1968:3-4).

Noctilio labialis labialis (Kerr, 1792)

Noctilio labialis (Kerr, 1792)

Specimens.Boaco: 4 km W Teustepe, 140 m, 9. Chontales: Hato Grande, 13 km S, 8 km W Juigalpa, 60 m, 49. Rivas: 4 km S, 1.5 km E Alta Gracia, 40 m, Isla de Ometepe, 1; Finca Amayo, 13 km S, 14 km E Rivas, 40 m, 4. Zelaya: S side Río Mico, El Recreo, 25 m, 1; Cara de Mono, 50 m, 2.

Specimens.Boaco: 4 km W of Teustepe, 140 m, 9. Chontales: Hato Grande, 13 km S, 8 km W of Juigalpa, 60 m, 49. Rivas: 4 km S, 1.5 km E of Alta Gracia, 40 m, Isla de Ometepe, 1; Finca Amayo, 13 km S, 14 km E of Rivas, 40 m, 4. Zelaya: S side of Río Mico, El Recreo, 25 m, 1; Cara de Mono, 50 m, 2.

This species has been reported previously from Nicaragua by several authors. All our specimens were netted over small streams or shot as they foraged; parts of scarabids and lepidopterans were found in the mouths of several individuals shot at Finca Amayo. Twenty-six of 31 autopsied females taken in April were pregnant, each containing a single embryo—average crown-rump length 16.7 (5-26) mm. Testes of 15 males collected in April had an average length of 4.6 (2-7) mm, those of four taken in June, 5.2 (4-6) mm.

This species has previously been reported in Nicaragua by several authors. All our specimens were captured over small streams or shot while they were foraging; parts of scarabs and moths were found in the mouths of several individuals shot at Finca Amayo. Out of 31 autopsied females collected in April, 26 were pregnant, each containing a single embryo—average crown-rump length 16.7 (5-26) mm. The testes of 15 males collected in April had an average length of 4.6 (2-7) mm, while those of four collected in June were 5.2 (4-6) mm.

We follow Cabrera (1958:55), Husson (1962:63), and Handley (1966b:758) in use of the subspecific name labialis, the type locality of which is the "Mosquito shore" of Nicaragua, rather than Perú as suggested by Hershkovitz (1949:433-434).

We follow Cabrera (1958:55), Husson (1962:63), and Handley (1966b:758) in using the subspecies name labialis, which has its type locality in the "Mosquito shore" of Nicaragua, instead of Perú as suggested by Hershkovitz (1949:433-434).

Noctilio leporinus mexicanus Goldman, 1915

Noctilio leporinus mexicanus Goldman, 1915

Specimens.Chinandega: Potosí, 5 m, 2. Chontales: Hato Grande, 13 km S, 8 km W Juigalpa, 60 m, 4. Rivas: 4 km S, 1.5 km E Alta Gracia, 40 m, Isla de Ometepe, 4; Mérida, 40 m, Isla de Ometepe, 2; Finca Amayo, 13 km S, 14 km E Rivas, 40 m, 1.

Specimens.Chinandega: Potosí, 5 m, 2. Chontales: Hato Grande, 13 km south, 8 km west of Juigalpa, 60 m, 4. Rivas: 4 km south, 1.5 km east of Alta Gracia, 40 m, Isla de Ometepe, 4; Mérida, 40 m, Isla de Ometepe, 2; Finca Amayo, 13 km south, 14 km east of Rivas, 40 m, 1.

This fish-eating species, first reported from Nicaragua by Davis et al. (1964:376), apparently occurs throughout Middle America, although known from the region by comparatively few records. We have 13 additional Nicaraguan specimens as listed above.

This fish-eating species, first identified in Nicaragua by Davis et al. (1964:376), seems to be found throughout Central America, although there are relatively few documented sightings from the area. We have 13 more specimens from Nicaragua as listed above.

The two individuals (both females, one pregnant with an embryo that measured 20 mm) from Potosí were caught on 6 March in a mist net set over a large pool in a shallow estuarine stream; the mouth of the stream opened into the Gulf of Fonseca approximately 200 yards below our netting site. Other individuals of this species were observed as they foraged over large pools formed at high tide near the mouth of the stream. Our other specimens were caught in mist nets set over fresh water streams near Lake Nicaragua or along the shores of the lake. A female from near Alta Gracia, caught on 27 March, carried a single embryo that measured 41 mm, whereas one from Finca Amayo was lactating on 25 June. Four males taken on Isla de Ometepe in late March and early April had a mean testicular length of 9.5 (8-10) mm.

The two individuals (both females, one pregnant with an embryo measuring 20 mm) from Potosí were captured on March 6 in a mist net set over a large pool in a shallow estuarine stream; the mouth of the stream opened into the Gulf of Fonseca about 200 yards downstream from our netting site. Other individuals of this species were seen foraging in the large pools formed at high tide near the stream's mouth. Our other specimens were caught in mist nets set over freshwater streams near Lake Nicaragua or along the lake's shores. A female from near Alta Gracia, caught on March 27, had a single embryo measuring 41 mm, while one from Finca Amayo was lactating on June 25. Four males captured on Isla de Ometepe in late March and early April had an average testicular length of 9.5 (8-10) mm.

Pteronotus davyi fulvus (Thomas, 1892)

Pteronotus davyi fulvus (Thomas, 1892)

Specimens.Chontales: Cuapa, 4. Matagalpa: 3 mi E San Ramón, 126.

Specimens.Chontales: Cuapa, 4. Matagalpa: 3 mi E San Ramón, 126.

This small naked-backed bat has not been reported previously from Nicaragua. Autopsy of seven females collected on 9 May near San Ramón revealed that four were pregnant, each with a single embryo—average crown-rump length 25.0 (21-29) mm.

This small naked-backed bat hasn't been reported in Nicaragua before. An autopsy of seven females collected on May 9 near San Ramón showed that four were pregnant, each with a single embryo—average crown-rump length 25.0 (21-29) mm.

The distribution of P. davyi is poorly known in much of Central America. The species was reported only recently from Costa Rica (Starrett and Casebeer, 1968:8) and is unknown from Panamá. We assign our specimens tentatively to the subspecies fulvus on geographic grounds.

The distribution of P. davyi is not well understood in much of Central America. The species was only recently reported from Costa Rica (Starrett and Casebeer, 1968:8) and is not known from Panamá. We tentatively classify our specimens as the subspecies fulvus based on their geographic location.

Pteronotus parnellii fuscus (J. A. Allen, 1911)

Pteronotus parnellii fuscus (J. A. Allen, 1911)

Specimens.Boaco: Santa Rosa, 17 km N, 15 km E Boaco, 300 m, 1; Los Cocos, 14 km S Boaco, 220 m, 1. Chinandega: 6.5 km N, 1 km E Cosigüina, 10 m, 1. Zelaya: Bonanza, 850 ft, 1; 2 mi SW Bonanza, 600 ft, 1; S side Río Mico, El Recreo, 25 m, 1; Cara de Mono, 50 m, 4.

Specimens.Boaco: Santa Rosa, 17 km N, 15 km E Boaco, 300 m, 1; Los Cocos, 14 km S Boaco, 220 m, 1. Chinandega: 6.5 km N, 1 km E Cosigüina, 10 m, 1. Zelaya: Bonanza, 850 ft, 1; 2 mi SW Bonanza, 600 ft, 1; S side Río Mico, El Recreo, 25 m, 1; Cara de Mono, 50 m, 4.

Although this species is widespread in Middle America, it has been known previously from Nicaragua only by a specimen from "Chontales" (Miller, 1902:402). All of our specimens were captured in mist nets. Two adult females (one taken on 28 February and the other on 8 March) each carried a single embryo (13 and 18 mm in crown-rump length, respectively); a female taken in April was lactating and had a flaccid uterus suggesting relatively recent parturition. Adult females captured in the months of June, July, and August evidenced no sign of reproductive activity. Two of these were in dark, fresh pelage, but one captured on 24 June and another on 28 July were molting. In both individuals, active molt evidently had slowed or subsided and remnants of the old pelage (rich ochraceous orange) were confined to a narrow strip at the lateral edges of the body.

Although this species is common in Central America, it has only been previously reported from Nicaragua by a specimen from "Chontales" (Miller, 1902:402). All of our specimens were captured in mist nets. Two adult females (one caught on February 28 and the other on March 8) each had a single embryo (13 and 18 mm in crown-rump length, respectively); a female caught in April was lactating and had a soft uterus, suggesting a recent birth. Adult females captured in June, July, and August showed no signs of reproductive activity. Two of these had dark, fresh fur, but one captured on June 24 and another on July 28 were molting. In both individuals, the active molt seemed to have slowed down or stopped, and remnants of the old fur (a rich ochraceous orange) were limited to a narrow strip along the sides of the body.

We tentatively apply the subspecies name fuscus to our Nicaraguan bats on geographic grounds; one of us (Smith) currently is investigating geographic variation in the genus Pteronotus.

We cautiously use the subspecies name fuscus for our Nicaraguan bats based on their location; one of us (Smith) is currently studying geographic variation in the genus Pteronotus.

Pteronotus suapurensis (J. A. Allen, 1904)

Pteronotus suapurensis (J. A. Allen, 1904)

Specimens.Chontales: Cuapa, 1. Matagalpa: 3 mi E San Ramón, 24. Zelaya: Cara de Mono, 25 m, 4.

Specimens.Chontales: Cuapa, 1. Matagalpa: 3 miles east of San Ramón, 24. Zelaya: Cara de Mono, 25 meters, 4.

This relatively poorly known monotypic species occurs from southern Veracruz to the Amazon Basin. It has been reported from several localities in Central America including one in Nicaragua (Goodwin, 1942a:88). Three pregnant females from near San Ramón (9 May) carried embryos that had crown-rump lengths of 27, 27, and 28 mm, and two netted on 24 April at Cara de Mono each had an embryo that measured 22 mm. All of our specimens are in bright pelage that is fulvous red in color.

This relatively lesser-known single-species type is found from southern Veracruz to the Amazon Basin. It’s been documented in several places in Central America, including one in Nicaragua (Goodwin, 1942a:88). Three pregnant females near San Ramón (May 9) had embryos with crown-rump lengths of 27, 27, and 28 mm, and two captured on April 24 at Cara de Mono each had an embryo that measured 22 mm. All of our specimens have bright fur that is a reddish-yellow color.

Micronycteris megalotis mexicana Miller, 1898

Micronycteris megalotis mexicana Miller, 1898

Specimens.Carazo: 3 km N, 4 km W Diriamba, 600 m, 5. Granada: Hda. Mecatepe [2 km N, 11.5 km E Nandaime], 5. Managua: 5 mi NW Managua, 1. Matagalpa: Río Viejo, 7 mi WNW Darío, 4; 11 mi SE Darío, 1. Zelaya: S end Isla del Maíz Grande, 9.

Specimens.Carazo: 3 km north, 4 km west of Diriamba, 600 m, 5. Granada: Hda. Mecatepe [2 km north, 11.5 km east of Nandaime], 5. Managua: 5 miles northwest of Managua, 1. Matagalpa: Río Viejo, 7 miles west-northwest of Darío, 4; 11 miles southeast of Darío, 1. Zelaya: South end of Isla del Maíz Grande, 9.

The individuals from Isla de Maíz Grande were shot on 30 June as they flew from small caves and crevices in rocky outcrops on the south end of the island. Of the three adult females obtained at that time, two were lactating; each was accompanied by a young, the forearms of which measured 19.7 (male) and 21.3 mm (female). Two adult males from Isla del Maíz Grande had testes 2 mm in length.

The individuals from Isla de Maíz Grande were shot on June 30 as they flew out from small caves and crevices in rocky areas on the south end of the island. Of the three adult females collected at that time, two were nursing; each was with a young one, whose forearms measured 19.7 mm (male) and 21.3 mm (female). Two adult males from Isla del Maíz Grande had testes 2 mm long.

Table 1.—Selected measurements of adults of two subspecies of Micronycteris megalotis from Nicaragua. Superscript numbers indicate fewer specimens averaged than indicated in left-hand column.

Table 1.—Selected measurements of adults of two subspecies of Micronycteris megalotis from Nicaragua. Superscript numbers indicate fewer specimens averaged than shown in the left-hand column.

Number of
specimens
averaged or
catalogue number,
and sex
Length
of
forearm
Greatest
length
of
skull
Zygomatic
breadth
Breadth
of
braincase
Length
of
maxillary
toothrow
Micronycteris megalotis mexicana, west-central Nicaraguaa
Average 8 (3 ♂, 5 ♀) 35.4 19.56 9.5 8.07 7.5  
Minimum 33.0 18.8   9.1 7.7   7.3  
Maximum 38.1 20.3   9.8 8.2   7.7  
Isla del Maíz Grande, Nicaragua
Average 6 (3 ♂, 3 ♀) 35.6 19.4   9.2 7.8   7.4  
Minimum 34.5 19.1   9.0 7.7   7.3  
Maximum 37.0 19.8   9.3 7.9   7.5  
Micronycteris megalotis microtis, Greytown, Nicaragua (holotype)
USNM 16366/23364, ♂ 31.5 18.2   8.8 7.6   6.9  
Río Coco, Nicaragua (AMNH)
Average 6 (3 ♂, 3 ♀) 33.6 18.93 7.53 7.13
Minimum 32.7 18.8   7.4   7.0  
Maximum 34.2 19.0   7.6   7.2  
Bonanza, Nicaragua
KU 96251, ♂ 32.3 18.4   8.8 7.6   7.0  

 aSpecimens labeled with reference to Darío, Diriamba, and Managua.

 aSamples tagged with references to Darío, Diriamba, and Managua.

Four of the five specimens taken northwest of Diriamba were shot from a daytime retreat in a culvert; the fifth was caught by hand as it attempted to fly out of a hollow, fallen tree. Two adult females captured on 31 March were pregnant, each carrying a single embryo (13 and 14 mm in crown-rump length), whereas two obtained on 14 August showed no sign of reproductive activity. An adult male, also taken on 14 August, had testes 2 mm in length. Of three additional adult females, one captured on 3 June was pregnant (embryo 21 mm in crown-rump length), whereas two obtained on 14 April evinced no gross reproductive activity.

Four out of the five specimens collected northwest of Diriamba were shot while they were resting in a culvert during the day; the fifth was caught by hand as it tried to escape from a hollow, fallen tree. Two adult females captured on March 31 were pregnant, each carrying a single embryo (13 and 14 mm in crown-rump length), while two collected on August 14 showed no signs of reproductive activity. An adult male, also taken on August 14, had testes measuring 2 mm in length. Of three additional adult females, one captured on June 3 was pregnant (embryo 21 mm in crown-rump length), while two obtained on April 14 showed no clear reproductive activity.

The subspecies mexicana has not been reported previously from Nicaragua, although Gardner et al. (1970:715) recently extended its known distribution southward from Honduras (Goodwin, 1942c:124) and El Salvador (Felten, 1956:180) to west-central Costa Rica. In Nicaragua, as apparently in Costa Rica, mexicana occupies the Pacific versant, the Caribbean lowlands being inhabited by the smaller race, Micronycteris megalotis microtis Miller, 1898 (type locality, Greytown, Nicaragua—reported also from "Río Coco," Nicaragua, by J. A. Allen, 1910:110). Nicaraguan examples of M. m. mexicana are, on the average, considerably larger in cranial dimensions and length of forearm than are specimens of M. m. microtis (see Table 1). The series of microtis from "Río Coco," probably from the headwaters of that stream in the vicinity of San Juan de Río Coco and thus near the divide between Caribbean and Pacific drainages, is intermediate in size between the two subspecies and suggests intergradation between them. As noted also by Gardner et al. (1970:715), we find no differences in length of ear between microtis and mexicana (contrary to Miller's claim, in the original description, that microtis had noticeably smaller ears), nor do we note any consistent differences in color between the two races on the basis of the specimens at hand.

The subspecies mexicana has not been previously reported in Nicaragua, although Gardner et al. (1970:715) recently expanded its known range southward from Honduras (Goodwin, 1942c:124) and El Salvador (Felten, 1956:180) to west-central Costa Rica. In Nicaragua, as seems to be the case in Costa Rica, mexicana is found on the Pacific slope, while the Caribbean lowlands are home to the smaller subspecies, Micronycteris megalotis microtis Miller, 1898 (type locality, Greytown, Nicaragua—also reported from "Río Coco," Nicaragua, by J. A. Allen, 1910:110). Nicaraguan examples of M. m. mexicana are generally significantly larger in cranial size and forearm length compared to specimens of M. m. microtis (see Table 1). The series of microtis from "Río Coco," likely from the headwaters of that stream near San Juan de Río Coco and close to the divide between Caribbean and Pacific watersheds, is intermediate in size between the two subspecies and suggests a blend between them. As noted by Gardner et al. (1970:715), we find no differences in ear length between microtis and mexicana (contrary to Miller's original claim that microtis had noticeably smaller ears), nor do we observe any consistent color differences between the two races based on the specimens we have.

Our specimens from Isla del Maíz Grande inexplicably agree rather closely in size (average but slightly smaller) with specimens of M. m. mexicana from western Nicaragua and elsewhere within the range of the subspecies, and are tentatively, therefore, referred to mexicana. Four specimens earlier reported (G. M. Allen, 1929:130) from the same island also are relatively large (forearm 35 mm). Further commentary on this insular population must await a time when additional material is available from Central America.

Our samples from Isla del Maíz Grande surprisingly match pretty closely in size (average but a bit smaller) with samples of M. m. mexicana from western Nicaragua and other parts of the subspecies' range, so we’re tentatively labeling them as mexicana. Four samples previously reported (G. M. Allen, 1929:130) from the same island are also relatively large (forearm 35 mm). Any more comments on this island population will have to wait until we have more material from Central America.

Tonatia nicaraguae Goodwin, 1942

Tonatia nicaraguae Goodwin, 1942

Specimens.Boaco: Santa Rosa, 17 km N, 15 km E Boaco, 300 m, 1. Chontales: Hato Grande, 13 km S, 8 km W Juigalpa, 60 m, 1.

Specimens.Boaco: Santa Rosa, 17 km N, 15 km E Boaco, 300 m, 1. Chontales: Hato Grande, 13 km S, 8 km W Juigalpa, 60 m, 1.

Only four specimens of this seemingly rare species have been recorded previously from Nicaragua—one (the holotype) from Kanawa Creek, near Cukra, north of Bluefields, 100 ft, Zelaya (Goodwin, 1942b:205), another from 12.5 mi. S and 13 mi. E Rivas, 125 ft, Rivas (Davis and Carter, 1962:67-68), and two from 6 km N Tuma, 500 m, Matagalpa (Valdez and LaVal, 1971:248). Our specimens were caught in mist nets placed over small, quiet streams that were fringed with tall, gallery forest. The surrounding areas were savanna-like with small stands of secondary forest. An adult male taken on 21 April had testes that measured 5 mm in length, whereas those of another (9 August) were 3 mm.

Only four specimens of this seemingly rare species have been previously recorded from Nicaragua—one (the holotype) from Kanawa Creek, near Cukra, north of Bluefields, 100 ft, Zelaya (Goodwin, 1942b:205), another from 12.5 mi. S and 13 mi. E Rivas, 125 ft, Rivas (Davis and Carter, 1962:67-68), and two from 6 km N Tuma, 500 m, Matagalpa (Valdez and LaVal, 1971:248). Our specimens were captured in mist nets set up over small, quiet streams that were lined with tall, gallery forest. The surrounding areas resembled savannas with small patches of secondary forest. An adult male taken on April 21 had testes that measured 5 mm in length, while another (August 9) had testes measuring 3 mm.

Handley (1966b:761) synonymized T. nicaraguae with Tonatia minuta Goodwin, 1942, a conclusion with which we agree. However, the name nicaraguae (Goodwin, 1942b:205) has page priority over minuta Goodwin (op. cit.:206) and is the valid name for the species rather than minuta as used by Handley (see also LaVal, 1969:820; Gardner et al., 1970:716; Valdez and LaVal, 1971:248).

Handley (1966b:761) equated T. nicaraguae with Tonatia minuta Goodwin, 1942, a conclusion we agree with. However, the name nicaraguae (Goodwin, 1942b:205) has page priority over minuta Goodwin (op. cit.:206) and is the correct name for the species instead of minuta as used by Handley (see also LaVal, 1969:820; Gardner et al., 1970:716; Valdez and LaVal, 1971:248).

Measurements of the two males (that from Hato Grande listed first) are as follows: total length, 63, 60 mm; length of tail, 5, 6 mm; length of hind foot, 10, 9 mm; length of ear, 23, 23 mm; length of forearm, 34.5, 35.6 mm; weight, 11.4, 8.8 gms; greatest length of skull, 20.2, 20.5 mm; zygomatic breadth, 9.5, 9.5 mm; breadth of braincase, 8.5, 8.2 mm; postorbital breadth, 3.1, 2.9 mm; length of maxillary toothrow, 7.0, 7.1 mm; breadth across upper molars, 6.3, 6.5 mm. We have not compared our specimens directly with others from Middle America. On the basis of available measurements, they resemble material reported from Honduras (LaVal, 1969:820), averaging larger than other specimens for which measurements have been published (see especially Goodwin, 1942b:206; Davis and Carter, 1962:68; Davis et al., 1964:379; Gardner et al., 1970:716-717).

Measurements of the two males (with the one from Hato Grande listed first) are as follows: total length, 63, 60 mm; tail length, 5, 6 mm; hind foot length, 10, 9 mm; ear length, 23, 23 mm; forearm length, 34.5, 35.6 mm; weight, 11.4, 8.8 g; greatest skull length, 20.2, 20.5 mm; zygomatic breadth, 9.5, 9.5 mm; braincase breadth, 8.5, 8.2 mm; postorbital breadth, 3.1, 2.9 mm; maxillary toothrow length, 7.0, 7.1 mm; breadth across upper molars, 6.3, 6.5 mm. We haven't compared our specimens directly with others from Middle America. Based on the available measurements, they look similar to the specimens reported from Honduras (LaVal, 1969:820), averaging larger than other specimens for which measurements have been published (see especially Goodwin, 1942b:206; Davis and Carter, 1962:68; Davis et al., 1964:379; Gardner et al., 1970:716-717).

Phyllostomus hastatus panamensis J. A. Allen, 1904

Phyllostomus hastatus panamensis J. A. Allen, 1904

Specimens.Carazo: 3 km N, 4 km W Diriamba, 600 m, 1. Madriz: Darailí, 5 km N, 14 km E Condega, 940 m, 4. Managua: 3 km SW Tipitapa, 40 m, 1; 3 km N Sabana Grande, 50 m, 2; 2 km N Sabana Grande, 40 m, 1; 5 mi S Managua, 2. Matagalpa: La Danta, 1 km N, 5 km E Esquipulas, 760 m, 1. Nueva Segovia: 4.5 km N, 2 km E Jalapa, 630 m, 2; 1.5 km N, 1 km E Jalapa, 660 m, 1. Zelaya: Bonanza, 850 ft, 2; El Recreo, 25 m, 8.

Specimens.Carazo: 3 km N, 4 km W of Diriamba, 600 m, 1. Madriz: Darailí, 5 km N, 14 km E of Condega, 940 m, 4. Managua: 3 km SW of Tipitapa, 40 m, 1; 3 km N of Sabana Grande, 50 m, 2; 2 km N of Sabana Grande, 40 m, 1; 5 mi S of Managua, 2. Matagalpa: La Danta, 1 km N, 5 km E of Esquipulas, 760 m, 1. Nueva Segovia: 4.5 km N, 2 km E of Jalapa, 630 m, 2; 1.5 km N, 1 km E of Jalapa, 660 m, 1. Zelaya: Bonanza, 850 ft, 2; El Recreo, 25 m, 8.

This large spear-nosed species has been reported previously from Nicaragua only from Matagalpa (Goodwin, 1942c:126). Phyllostomus hastatus evidently occurs throughout the country and is relatively common in some places.

This large spear-nosed species has only been reported from Matagalpa, Nicaragua (Goodwin, 1942c:126). Phyllostomus hastatus seems to be found throughout the country and is fairly common in certain areas.

Two females taken 5 mi S Managua on 13 March each carried a single embryo (crown-rump length 27 and 32 mm). Lactating females were captured in June, July, and August.

Two females captured 5 miles south of Managua on March 13 each had a single embryo (crown-rump length 27 and 32 mm). Lactating females were captured in June, July, and August.

Trachops cirrhosus coffini Goldman, 1925

Trachops cirrhosus coffini Goldman, 1925

A male fringe-lipped bat netted over a small stream at Cara de Mono, 50 m, Zelaya, in the Caribbean lowlands, on 24 April, 1968, constitutes the second known occurrence of this species in Nicaragua. Carter et al. (1966:491) earlier reported two males from Río Coco, 64 mi NNE Jinotega, 1000 ft, Jinotega. The testes of our specimen were 4 mm long.

A male fringe-lipped bat was caught over a small stream at Cara de Mono, 50 m, Zelaya, in the Caribbean lowlands, on April 24, 1968. This marks the second recorded sighting of this species in Nicaragua. Carter et al. (1966:491) previously reported two males from Río Coco, 64 miles NNE of Jinotega, at 1000 ft elevation, Jinotega. The testes of our specimen measured 4 mm in length.

Davis and Carter (1962:69), Carter et al. (loc. cit.), and Starrett and Casebeer (1968:11) did not apply a trinomen to bats of this species and noted overlap of measurements between T. c. cirrhosus (Spix) and T. c. coffini Goldman. However, until detailed comparisons can be made, we follow Jones (1966:452) in retaining the subspecific name coffini.

Davis and Carter (1962:69), Carter et al. (loc. cit.), and Starrett and Casebeer (1968:11) did not give a trinomen to bats of this species and noted overlap in measurements between T. c. cirrhosus (Spix) and T. c. coffini Goldman. However, until detailed comparisons can be made, we follow Jones (1966:452) in keeping the subspecific name coffini.

Chrotopterus auritus auritus (Peters, 1856)

Chrotopterus auritus auritus (Peters, 1856)

An adult male captured in a mist net set in a forest clearing at Santa María de Ostuma, 1250 m, Matagalpa, represents the first record of this bat from Nicaragua. The testes of our individual, taken on 1 July 1966, were 6 mm in length. Externally and cranially our Nicaraguan example closely resembles specimens of C. auritus from Veracruz and the Yucatán Peninsula. Handley (1966b:762) and Starrett and Casebeer (1968:12) expressed doubt as to the validity of the currently used subspecific names in this species. Comparisons of cranial and external measurements of the material at hand with those given in various published accounts—Burt and Stirton (1961), Starrett and Casebeer (1968), and Thomas (1905), for example—reveal little variation. Until additional information is available (especially as concerns the South American races), however, we tentatively apply the subspecific name C. a. auritus to Middle American populations.

An adult male captured in a mist net set in a forest clearing at Santa María de Ostuma, 1250 m, Matagalpa, is the first record of this bat from Nicaragua. The testes of this individual, taken on July 1, 1966, were 6 mm long. Externally and cranially, our Nicaraguan specimen closely resembles specimens of C. auritus from Veracruz and the Yucatán Peninsula. Handley (1966b:762) and Starrett and Casebeer (1968:12) expressed doubt about the validity of the subspecific names currently used for this species. Comparing cranial and external measurements of our specimen with those provided in various published accounts—Burt and Stirton (1961), Starrett and Casebeer (1968), and Thomas (1905), for instance—shows little variation. However, until more information is available (especially regarding the South American races), we tentatively assign the subspecific name C. a. auritus to Middle American populations.

Anoura geoffroyi lasiopyga (Peters, 1868)

Anoura geoffroyi lasiopyga (Peters, 1868)

Four specimens of this species, netted on 24 and 25 July 1967 in a banana grove 1.5 km N and 1 km E Jalapa, 660 m, Nueva Segovia, provide the first record of this glossophagine from Nicaragua. Two males each had testes 6 mm in length; one female evidenced no reproduction activity, whereas another carried an embryo 4 mm in crown-rump length. In addition to our material, there is a specimen in the British Museum (BM 8.6.22.4) from Cafetal "Concordia," 4000 ft, Jinotega.

Four specimens of this species, caught on July 24 and 25, 1967, in a banana grove 1.5 km north and 1 km east of Jalapa, at an elevation of 660 m in Nueva Segovia, mark the first record of this glossophagine in Nicaragua. Two males each had testes measuring 6 mm in length; one female showed no signs of reproductive activity, while another had an embryo measuring 4 mm from crown to rump. Besides our specimens, there is a specimen in the British Museum (BM 8.6.22.4) from Cafetal "Concordia," located at 4000 ft in Jinotega.

It may be noteworthy that the two localities at which this bat is known both are in the highlands of the northern part of Nicaragua, and that we failed to take additional specimens in many hundreds of hours of netting in other places in the country.

It’s worth mentioning that the two places where this bat has been found are both in the northern highlands of Nicaragua, and we didn’t manage to catch any more specimens after hundreds of hours of netting in other areas of the country.

Choeroniscus godmani (Thomas, 1903)

Choeroniscus godmani (Thomas, 1903)

Godman's bat was reported from Nicaragua by Handley (1966a:86), who used the locality designation "El Realejo" for the three specimens available to him. Actually, the three are from the nearby Hda. San Isidro, 10 km S Chinandega. We have taken three additional specimens as follows: Santa Rosa, 17 km N and 15 km E Boaco, 300 m, Boaco (an adult female taken on 21 March, which was pregnant with an embryo measuring 16 mm in crown-rump length); 2 km E Yalí, 900 m, Jinotega (an adult male netted on 3 August, testes 4 mm in length); and Santa María de Ostuma, 1250 m, Matagalpa (a nonpregnant, adult female captured on 11 April). Bats of this species have been taken as far north as the western Mexican state of Sinaloa (Jones, 1964b:510).

Godman's bat was reported from Nicaragua by Handley (1966a:86), who referred to the location as "El Realejo" for the three specimens he had. In reality, the three specimens are from the nearby Hda. San Isidro, 10 km south of Chinandega. We have collected three more specimens as follows: Santa Rosa, 17 km north and 15 km east of Boaco, at 300 m elevation (an adult female captured on March 21, which was pregnant with an embryo measuring 16 mm in crown-rump length); 2 km east of Yalí, at 900 m elevation, Jinotega (an adult male netted on August 3, with testes measuring 4 mm); and Santa María de Ostuma, at 1250 m elevation, Matagalpa (a nonpregnant adult female caught on April 11). Bats of this species have been found as far north as the western Mexican state of Sinaloa (Jones, 1964b:510).

Lichonycteris obscura Thomas, 1895

Lichonycteris obscura Thomas, 1895

Managua is the type locality of this rare long-nosed species and a specimen was reported from 6 mi W Rama, 50 ft, Zelaya, by Davis et al. (1964:380). Our collection contains three males, one from Jalapa, 660 m, Nueva Segovia, captured on the night of 27 July 1967 as it flew around a lighted room in a house, and two from the south side of the Río Mico, El Recreo, 25 m, Zelaya, taken on 26 and 27 July 1966 (one was netted and the other caught by hand in the lighted room of a building at night).

Managua is the original location for this rare long-nosed species, and a specimen was reported 6 miles west of Rama, at 50 feet elevation, by Davis et al. (1964:380). Our collection includes three males: one from Jalapa, at 660 meters, captured on the night of July 27, 1967, as it flew around a lit room in a house, and two from the south side of the Río Mico, El Recreo, at 25 meters, caught on July 26 and 27, 1966 (one was netted and the other was caught by hand in the lit room of a building at night).

Selected measurements of the three males are, respectively: total length, 55, 58, 57 mm; length of tail, 7, 10, 9 mm; length of hind foot, 7, 9, 9 mm; length of ear, 10, 11, 11 mm; length of forearm, 30.9, 31.0, 30.8 mm; weight, 6.8, 6.8, 6.2 gms; length of testes, 1, 2, 2 mm; greatest length of skull, 18.5, 18.0, 17.9 mm; breadth of braincase, 8.1, 8.4, 8.3 mm; length of maxillary toothrow, 5.7, 5.5, 5.7 mm.

Selected measurements of the three males are as follows: total length, 55, 58, 57 mm; tail length, 7, 10, 9 mm; hind foot length, 7, 9, 9 mm; ear length, 10, 11, 11 mm; forearm length, 30.9, 31.0, 30.8 mm; weight, 6.8, 6.8, 6.2 g; testis length, 1, 2, 2 mm; greatest skull length, 18.5, 18.0, 17.9 mm; braincase breadth, 8.1, 8.4, 8.3 mm; maxillary toothrow length, 5.7, 5.5, 5.7 mm.

Carollia castanea H. Allen, 1890

Carollia castanea H. Allen, 1890

Specimens.Boaco: Santa Rosa, 17 km N, 15 km E Boaco, 300 m, 7. Chontales: 1 km N, 2.5 km W Villa Somoza, 330 m, 4. Matagalpa: 1 km NE Esquipulas, 420 m, 1. Nueva Segovia: 7 km N, 4 km E Jalapa, 660 m, 4. Zelaya: S side Río Mico, El Recreo, 25 m, 6; Cara de Mono, 50 m, 15.

Specimens.Boaco: 17 km north and 15 km east of Boaco, 300 m, 7. Chontales: 1 km north and 2.5 km west of Villa Somoza, 330 m, 4. Matagalpa: 1 km northeast of Esquipulas, 420 m, 1. Nueva Segovia: 7 km north and 4 km east of Jalapa, 660 m, 4. Zelaya: south side of Río Mico, El Recreo, 25 m, 6; Cara de Mono, 50 m, 15.

Bats of this species apparently are common in the Caribbean lowlands of Nicaragua; the highest altitude at which we have taken specimens is 660 meters. The only previous report of C. castanea from Nicaragua evidently is that of Davis et al. (1964:379), who mentioned it in passing (from Cacao, Zelaya) in an account of Macrophyllum macrophyllum. Two adult females each carried an embryo having crown-rump lengths of 20 (21 March) and 10 mm (27 July). Adult females evincing no gross reproductive activity were taken in February (one), March (one), April (four), June (three), July (two), and August (two). Four adult males netted on 24 April had testes with an average length of 7.0 (5-9) mm, whereas those of four other adult males taken in late June had an average of 4.0 (2-6) mm.

Bats of this species are apparently common in the Caribbean lowlands of Nicaragua; the highest elevation at which we have collected specimens is 660 meters. The only previous report of C. castanea from Nicaragua seems to be that of Davis et al. (1964:379), who mentioned it briefly (from Cacao, Zelaya) in a discussion of Macrophyllum macrophyllum. Two adult females each had an embryo with crown-rump lengths of 20 mm (21 March) and 10 mm (27 July). Adult females showing no significant reproductive activity were collected in February (one), March (one), April (four), June (three), July (two), and August (two). Four adult males captured on 24 April had testes with an average length of 7.0 (5-9) mm, while those of four other adult males collected in late June had an average of 4.0 (2-6) mm.

In our collections from Nicaragua, we find at least three kinds of Carollia and we follow Handley (1966b:764-765) in tentatively assigning these to C. castanea, C. subrufa, and C. perspicillata. The systematics of this genus is currently under study by Ronald H. Pine. In Nicaragua, castanea differs from subrufa (with which it has been confused in the past) in being smaller, both externally and cranially, and much darker in color as well as in the additional characters mentioned by Handley (loc. cit.).

In our collections from Nicaragua, we find at least three types of Carollia, and we follow Handley (1966b:764-765) in tentatively identifying these as C. castanea, C. subrufa, and C. perspicillata. Ronald H. Pine is currently studying the systematics of this genus. In Nicaragua, castanea is different from subrufa (which it has been confused with in the past) as it is smaller, both in overall size and skull dimensions, and much darker in color, along with the additional features noted by Handley (loc. cit.).

Sturnira ludovici ludovici Anthony, 1924

Sturnira ludovici ludovici Anthony, 1924

An adult male (testes 6 mm) yellow-shouldered bat from Darailí, 5 km N and 14 km E Condega, 940 m, in Madriz, provides the only specimen thus far reported from Nicaragua. Sturnira ludovici evidently is relatively rare in Nicaragua and may be confined to the highlands in the north, whereas the smaller S. lilium is abundant throughout the country and is the only other species of Sturnira represented in our collections.

An adult male yellow-shouldered bat (testes 6 mm) from Darailí, located 5 km north and 14 km east of Condega, at an elevation of 940 m in Madriz, is the only specimen reported so far from Nicaragua. Sturnira ludovici seems to be relatively rare in Nicaragua and may be limited to the northern highlands, while the smaller S. lilium is common throughout the country and is the only other species of Sturnira found in our collections.

We provisionally refer our specimen to S. l. ludovici pending Luis de la Torre's forthcoming review of the genus. Selected measurements are: total length, 77 mm; length of hind foot, 15 mm; length of ear, 19 mm; length of forearm, 44.8 mm; weight, 26.8 gms; greatest length of skull, 24.2 mm; zygomatic breadth, 14.2 mm; postorbital breadth, 6.3 mm; breadth of braincase, 10.5 mm; length of maxillary toothrow, 6.8 mm.

We are temporarily labeling our specimen as S. l. ludovici while we wait for Luis de la Torre's upcoming review of the genus. The selected measurements are: total length, 77 mm; length of hind foot, 15 mm; length of ear, 19 mm; length of forearm, 44.8 mm; weight, 26.8 g; greatest length of skull, 24.2 mm; zygomatic breadth, 14.2 mm; postorbital breadth, 6.3 mm; breadth of braincase, 10.5 mm; length of maxillary toothrow, 6.8 mm.

Uroderma magnirostrum Davis, 1968

Uroderma magnirostrum Davis, 1968

In the original description of U. magnirostrum, Davis (1968:680) reported one specimen from Nicaragua—a female in our collection from 3 km N and 4 km W Sapoá, 40 m, Rivas. We have two additional specimens, both from the relatively dry northwestern Departamento de Chinandega. On 8 July 1966, a male (testes 2 mm) was netted under trees along a small stream at San Antonio, 35 m, and a female (one embryo 28 mm in crown-rump length) was netted on 4 March 1968 over a warm spring at a place 4.5 km N Cosigüina, 15 m. Judging from published records, this species is limited in Middle America to the Pacific versant.

In the original description of U. magnirostrum, Davis (1968:680) reported one specimen from Nicaragua—a female in our collection from 3 km N and 4 km W Sapoá, 40 m, Rivas. We have two more specimens, both from the relatively dry northwestern Departamento de Chinandega. On July 8, 1966, a male (testes 2 mm) was caught under trees along a small stream at San Antonio, 35 m, and a female (one embryo 28 mm in crown-rump length) was caught on March 4, 1968, over a warm spring 4.5 km N of Cosigüina, 15 m. Based on published records, this species is found in Middle America only on the Pacific side.

Selected measurements of the three Nicaraguan specimens are, respectively: total length, 65, 64, 67 mm; length of hind foot, 12, 11, 14 mm; length of ear, 16.5, 16, 18 mm; length of forearm, 42.2, 41.7, 45.2 mm; weight, 16.2, 13.8, 21.4 (pregnant) gms; greatest length of skull, 22.7, 23.4, 23.8 mm; zygomatic breadth, 12.4, 12.9, 13.1 mm; postorbital breadth, 5.8, 5.5, 5.9 mm; mastoid breadth, 10.9, 11.1, 11.1 mm; length of maxillary toothrow, 7.9, 8.1, 8.6 mm.

Selected measurements of the three Nicaraguan specimens are: total length, 65, 64, 67 mm; length of hind foot, 12, 11, 14 mm; length of ear, 16.5, 16, 18 mm; length of forearm, 42.2, 41.7, 45.2 mm; weight, 16.2, 13.8, 21.4 (pregnant) g; greatest length of skull, 22.7, 23.4, 23.8 mm; zygomatic breadth, 12.4, 12.9, 13.1 mm; postorbital breadth, 5.8, 5.5, 5.9 mm; mastoid breadth, 10.9, 11.1, 11.1 mm; length of maxillary tooth row, 7.9, 8.1, 8.6 mm.

Vampyrops helleri Peters, 1866

Vampyrops helleri Peters, 1866

Specimens.Boaco: Santa Rosa, 17 km N, 15 km E Boaco, 300 m, 3. Carazo: 3 km N, 4 km W Diriamba, 600 m, 2. Chinandega: Potosí, 5 m, 1; 6.5 km N, 1 km E Cosigüina, 10 m, 1; 4.5 km N Cosigüina, 15 m, 3; Hda. Bellavista, 720 m, Volcán Casita, 13. Chontales: 1 km N, 2.5 km W Villa Somoza, 330 m, 4. Granada: Finca Santa Cecilia, 6.5 km SE Guanacaste, 660 m, 4. Matagalpa: Finca Tepeyac, 10.5 km N, 9 km E Matagalpa, 960 m, 1. Nueva Segovia: 4.5 km N, 2 km E Jalapa, 680 m, 2; 1.5 km N, 1 km E Jalapa, 660 m, 2. Rivas: 2 km N, 3 km E Mérida, 200 m, Isla de Ometepe, 4; 4 km N, 4 km W Sapoá, 40 m, 1. Zelaya: S side Río Mico, El Recreo, 25 m, 3.

Specimens.Boaco: Santa Rosa, 17 km N, 15 km E Boaco, 300 m, 3. Carazo: 3 km N, 4 km W Diriamba, 600 m, 2. Chinandega: Potosí, 5 m, 1; 6.5 km N, 1 km E Cosigüina, 10 m, 1; 4.5 km N Cosigüina, 15 m, 3; Hda. Bellavista, 720 m, Volcán Casita, 13. Chontales: 1 km N, 2.5 km W Villa Somoza, 330 m, 4. Granada: Finca Santa Cecilia, 6.5 km SE Guanacaste, 660 m, 4. Matagalpa: Finca Tepeyac, 10.5 km N, 9 km E Matagalpa, 960 m, 1. Nueva Segovia: 4.5 km N, 2 km E Jalapa, 680 m, 2; 1.5 km N, 1 km E Jalapa, 660 m, 2. Rivas: 2 km N, 3 km E Mérida, 200 m, Isla de Ometepe, 4; 4 km N, 4 km W Sapoá, 40 m, 1. Zelaya: S side Río Mico, El Recreo, 25 m, 3.

Only two specimens of this small white-lined species have been reported previously from Nicaragua—one from 1 km NW La Gatiada, 1300 ft, Chontales (Davis et al., 1964:383), and the other from 3 mi NNW Diriamba, Carazo (Jones, 1964a:507). This bat was relatively rare in collections until the last decade or so. Handley (1966b:766) reported V. helleri as abundant in the lowland areas of Panamá, and we found the same to be true in Nicaragua. We suspect that future investigations in Middle America will reveal this species to be a common member of lowland tropical communities. It is known as far north as southern Veracruz (Carter et al., 1966:494).

Only two examples of this small white-lined species have been reported before from Nicaragua—one from 1 km NW La Gatiada, 1300 ft, Chontales (Davis et al., 1964:383), and the other from 3 mi NNW Diriamba, Carazo (Jones, 1964a:507). This bat was relatively rare in collections until the last decade or so. Handley (1966b:766) noted V. helleri as abundant in the lowland areas of Panamá, and we found the same to be true in Nicaragua. We suspect that future research in Middle America will show this species to be a common presence in lowland tropical communities. It has been documented as far north as southern Veracruz (Carter et al., 1966:494).

Most of our specimens were captured in mist nets set over small streams bordered by gallery forest, or in banana groves. The range of ecological conditions in which this species was taken is represented by the semiarid environment of the Cosigüina Peninsula in northwestern Nicaragua and the humid tropical forest (secondary growth) in the vicinity of El Recreo in the Caribbean lowlands. Pregnant females were captured in March, April, June, July, and August, indicating that this species probably breeds throughout much of the year.

Most of our samples were caught in mist nets placed over small streams lined with gallery forest or in banana plantations. The variety of ecological conditions where this species was found includes the semiarid environment of the Cosigüina Peninsula in northwestern Nicaragua and the humid tropical forest (regrowth) near El Recreo in the Caribbean lowlands. Pregnant females were caught in March, April, June, July, and August, suggesting that this species likely breeds for much of the year.

Vampyrodes major G. M. Allen, 1908

Vampyrodes major G. M. Allen, 1908

Specimens.Boaco: Santa Rosa, 17 km N, 15 km E Boaco, 300 m, 8. Chontales: 1 km N, 2.5 km W Villa Somoza, 330 m, 2. Zelaya: S side Río Mico, 25 m, 6.

Specimens.Boaco: Santa Rosa, 17 km N, 15 km E Boaco, 300 m, 8. Chontales: 1 km N, 2.5 km W Villa Somoza, 330 m, 2. Zelaya: S side Río Mico, 25 m, 6.

This large white-lined stenodermine was known previously from Nicaragua by a single specimen from an unknown locality (J. A. Allen, 1910:112). All of our specimens were caught in mist nets, which were set over streams at Santa Rosa and near Villa Somoza, and in a banana grove at El Recreo. Two pregnant females, captured on 11 and 13 July at Santa Rosa, each carried an embryo (4 and 27 mm in crown-rump length, respectively); one of two other adult females captured there on 9 August also had an embryo (35 mm in length) but the other evidently was reproductively quiescent. Testes of adult males varied in length from 3 to 10 mm on the following dates (testicular lengths in parentheses): 25 February (10 mm); 21 March (8, 8 mm); 17 June (3, 4 mm); 13 July (6 mm); 27-28 July (4, 4 mm); 3 August (4 mm); 5 August (3 mm); 9 August (4 mm).

This large white-lined stenodermine was previously known from Nicaragua by a single specimen from an unknown location (J. A. Allen, 1910:112). All of our specimens were captured in mist nets set over streams at Santa Rosa and near Villa Somoza, as well as in a banana grove at El Recreo. Two pregnant females, caught on July 11 and 13 at Santa Rosa, each carried an embryo (4 and 27 mm in crown-rump length, respectively); one of two other adult females captured there on August 9 also had an embryo (35 mm in length), but the other was not reproductively active. The testes of adult males varied in length from 3 to 10 mm on the following dates (testicular lengths in parentheses): February 25 (10 mm); March 21 (8, 8 mm); June 17 (3, 4 mm); July 13 (6 mm); July 27-28 (4, 4 mm); August 3 (4 mm); August 5 (3 mm); August 9 (4 mm).

We follow Starrett and Casebeer (1968:12) in the use of the specific name major, rather than caraccioli as suggested by Cabrera (1958), Goodwin and Greenhall (1961), and Handley (1966b).

We follow Starrett and Casebeer (1968:12) by using the specific name major, instead of caraccioli as suggested by Cabrera (1958), Goodwin and Greenhall (1961), and Handley (1966b).

Vampyressa nymphaea Thomas, 1909

Vampyressa nymphaea Thomas, 1909

A pregnant female (crown-rump length of embryo 5 mm) was captured in a mist net set in a small banana grove on the south side of the Río Mico, El Recreo, 25 m, in the Caribbean lowlands, on 27 February 1968. This specimen provides the first record of the big yellow-eared bat from Nicaragua. The species was recently reported for the first time from Costa Rica (Gardner et al., 1970:721); it was characterized as uncommon in Panamá by Handley (1966b:767). The one Costa Rican locality of record also is in the Caribbean versant.

A pregnant female (embryo crown-rump length of 5 mm) was captured in a mist net located in a small banana grove on the south side of the Río Mico, El Recreo, at an elevation of 25 m, in the Caribbean lowlands, on February 27, 1968. This specimen marks the first record of the big yellow-eared bat in Nicaragua. The species was recently reported for the first time in Costa Rica (Gardner et al., 1970:721); it was noted as uncommon in Panamá by Handley (1966b:767). The single recorded location in Costa Rica is also on the Caribbean slope.

Selected external and cranial measurements of our female are: total length, 58 mm; length of hind foot, 11 mm; length of ear, 16 mm; length of forearm, 36.2 mm; weight, 12.3 gms; greatest length of skull, 21.1 mm; condylobasal length, 18.4 mm; zygomatic breadth, 12.3 mm; mastoid breadth, 10.5 mm; breadth across canines, 4.6 mm; breadth of braincase, 9.4 mm; length of maxillary toothrow, 7.2 mm; length of mandibular c-m3, 7.8 mm.

Selected external and cranial measurements of our female are: total length, 58 mm; length of hind foot, 11 mm; length of ear, 16 mm; length of forearm, 36.2 mm; weight, 12.3 g; greatest length of skull, 21.1 mm; condylobasal length, 18.4 mm; zygomatic breadth, 12.3 mm; mastoid breadth, 10.5 mm; breadth across canines, 4.6 mm; breadth of braincase, 9.4 mm; length of maxillary tooth row, 7.2 mm; length of mandibular c-m3, 7.8 mm.

Vampyressa pusilla thyone Thomas, 1909

Vampyressa pusilla thyone Thomas, 1909

Specimens.Boaco: Santa Rosa, 17 km N, 15 km E Boaco, 300 m, 5. Chontales: 1 km N, 2.5 km W Villa Somoza, 330 m, 1. Managua: Hda. San José, 2. Matagalpa: 2 km N, 6 km E Esquipulas, 960 m, 2.

Specimens.Boaco: Santa Rosa, 17 km N, 15 km E Boaco, 300 m, 5. Chontales: 1 km N, 2.5 km W Villa Somoza, 330 m, 1. Managua: Hda. San José, 2. Matagalpa: 2 km N, 6 km E Esquipulas, 960 m, 2.

The only previous record of occurrence for the small yellow-eared bat from Nicaragua is based on an adult female from Hda. La Cumplida, 670 m, Matagalpa (Starrett and de la Torre, 1964:60).

The only earlier record of the small yellow-eared bat in Nicaragua comes from an adult female found at Hda. La Cumplida, 670 m, Matagalpa (Starrett and de la Torre, 1964:60).

Two individuals taken near Esquipulas in mid-March, a pregnant female (crown-rump length of embryo 16 mm) and a male (testes 4 mm), were captured in nets set across trails cut through secondary forest. The wind was quite strong in this area at the time of our visit and only a few other species of bats—Glossophaga soricina, Artibeus jamaicensis, A. toltecus, A. phaeotis, Uroderma bilobatum, Sturnira lilium, Centurio senex, and Diphylla ecaudata—were taken in the same nets. The specimens from Boaco and Chontales were captured over small streams bordered by gallery forest. Four females collected at Santa Rosa on 21 March were pregnant; each carried a single embryo that measured 5, 18, 21, and 30 mm in crown-rump length; a male taken on the same date had testes that measured 3 mm.

Two individuals were captured near Esquipulas in mid-March: a pregnant female (with an embryo crown-rump length of 16 mm) and a male (with testes measuring 4 mm). They were caught in nets set across trails cut through the secondary forest. The wind was quite strong in the area during our visit, and only a few other species of bats—Glossophaga soricina, Artibeus jamaicensis, A. toltecus, A. phaeotis, Uroderma bilobatum, Sturnira lilium, Centurio senex, and Diphylla ecaudata—were also captured in the same nets. The specimens from Boaco and Chontales were caught near small streams lined with gallery forest. Four pregnant females collected at Santa Rosa on March 21 each carried a single embryo that measured 5, 18, 21, and 30 mm in crown-rump length; a male captured on the same date had testes that measured 3 mm.

Selected external and cranial measurements of two males, followed by the average (extremes in parentheses) of six females are: length of forearm, 31.1, 30.8, 30.8 (30.0-31.4) mm; greatest length of skull, 18.9, 18.9, 18.5 (18.1-18.8) mm; zygomatic breadth, 11.0, 11.0, 10.6 (10.4-10.9) mm; mastoid breadth, 9.5, 9.2, 9.2 (9.0-9.3) mm; length of maxillary toothrow, 6.1, 5.9, 5.9 (5.7-6.1) mm.

Selected external and cranial measurements of two males, followed by the average (with extremes in parentheses) of six females are: length of forearm, 31.1, 30.8, 30.8 (30.0-31.4) mm; greatest length of skull, 18.9, 18.9, 18.5 (18.1-18.8) mm; zygomatic breadth, 11.0, 11.0, 10.6 (10.4-10.9) mm; mastoid breadth, 9.5, 9.2, 9.2 (9.0-9.3) mm; length of maxillary toothrow, 6.1, 5.9, 5.9 (5.7-6.1) mm.

Chiroderma villosum jesupi J. A. Allen, 1900

Chiroderma villosum jesupi J. A. Allen, 1900

Specimens.Chinandega: 6.5 km N, 1 km E Cosigüina, 10 m, 2; 4.5 km N Cosigüina, 15 m, 7; Hda. Bellavista, 720 m, Volcán Casita, 5; San Antonio, 35 m, 2. Rivas: 2 km N, 3 km E Mérida, 200 m, Isla de Ometepe, 1.

Specimens.Chinandega: 6.5 km N, 1 km E Cosigüina, 10 m, 2; 4.5 km N Cosigüina, 15 m, 7; Hda. Bellavista, 720 m, Volcán Casita, 5; San Antonio, 35 m, 2. Rivas: 2 km N, 3 km E Mérida, 200 m, Isla de Ometepe, 1.

This species has been reported in Middle America from as far north as southern México. It evidently is uncommon in Costa Rica (see Gardner et al., 1970:722) and Panamá (Handley, 1966b:767). Our material, all collected from mist nets and consisting of 16 specimens from the northwestern department of Chinandega and one from Isla de Ometepe in Lago de Nicaragua, constitutes the first report of this bat from Nicaragua.

This species has been found in Central America, reaching as far north as southern Mexico. It seems to be rare in Costa Rica (see Gardner et al., 1970:722) and Panama (Handley, 1966b:767). Our samples, all collected from mist nets, include 16 specimens from the northwestern department of Chinandega and one from Isla de Ometepe in Lake Nicaragua, marking the first record of this bat in Nicaragua.

Four of five females taken in early March were pregnant; embryos averaged 26.0 (25-29) mm in crown-rump length. Four females taken in July carried embryos 14, 20, 23, and 25 mm in length. Testes of five adult males captured in March and April had an average length of 4.4 (3-7) mm, whereas those of two taken in July were 3 mm in length.

Four out of five females caught in early March were pregnant; the embryos averaged 26.0 (25-29) mm in crown-rump length. Four females captured in July were carrying embryos measuring 14, 20, 23, and 25 mm in length. The testes of five adult males caught in March and April had an average length of 4.4 (3-7) mm, while those of two captured in July measured 3 mm in length.

Artibeus toltecus hesperus Davis, 1969

Artibeus toltecus hesperus Davis, 1969

When Davis (1969) named A. t. hesperus, he assigned specimens only from as far south as El Salvador to the new subspecies, referring the three Nicaraguan examples of the species at his disposal to the nominal race. On the night of 6-7 April 1968, one of us (Smith) netted bats on the south part of Isla de Ometepe at a place 2 km N and 3 km E Mérida, 200 meters in elevation. One net was set across, and another parallel to, a small, boulder-strewn stream; the surrounding area was planted to coffee and had a good canopy of tall deciduous trees. Among the bats captured at this location were 10 A. toltecus that are referable to the subspecies hesperus, judging by their small size (Table 2).

When Davis (1969) named A. t. hesperus, he assigned specimens only as far south as El Salvador to this new subspecies, referring the three Nicaraguan examples of the species he had to the nominal race. On the night of April 6-7, 1968, one of us (Smith) caught bats in the southern part of Isla de Ometepe, about 2 km north and 3 km east of Mérida, at an elevation of 200 meters. One net was stretched across and another parallel to a small stream filled with boulders; the surrounding area was planted with coffee and had a good canopy of tall deciduous trees. Among the bats captured at this location were 10 A. toltecus that can be classified as the subspecies hesperus, based on their small size (Table 2).

Six of our specimens are females and each carried an embryo (range in crown-rump length 20-28 mm). Three adult males had testes 5, 6, and 7 mm in length. External measurements (extremes in parentheses) of our series are: total length, 55.9 (51-60) mm; length of hind foot, 10.7 (10-12) mm; length of ear, 14.8 (14-16) mm; weight of four males, 9.9 (8.8-11.5) gms; weight of six pregnant females, 14.9 (12.7-16.9) gms.

Six of our specimens are female, and each carried an embryo (crown-rump length ranging from 20 to 28 mm). Three adult males had testes measuring 5, 6, and 7 mm in length. The external measurements (with extremes in parentheses) of our series are: total length, 55.9 (51-60) mm; hind foot length, 10.7 (10-12) mm; ear length, 14.8 (14-16) mm; weight of four males, 9.9 (8.8-11.5) g; weight of six pregnant females, 14.9 (12.7-16.9) g.

Table 2.—Selected measurements of two subspecies of Artibeus toltecus from Nicaragua.

Table 2.—Selected measurements of two subspecies of Artibeus toltecus from Nicaragua.

Number of
specimens
averaged or
catalogue
number,
and sex
Length
of
forearm
Greatest
length
of
skull
Zygomatic
breadth
Breadth
of
braincase
Length
of
maxillary
toothrow
Artibeus toltecus toltecus, Departamento de Matagalpa
Average 6 (3 ♂, 3 ♀) 40.3 20.3 12.1 10.7 6.6
Minimum 38.8 19.8 11.8 10.5 6.5
Maximum 41.5 20.5 12.5 10.9 6.8
Artibeus toltecus hesperus, Isla de Ometepe, Rivas
Average 10 (4 ♂, 6 ♀) 38.0 19.4 11.5 10.2 6.3
Minimum 37.0 18.8 11.2 9.8 6.1
Maximum 39.7 19.8 11.8 10.5 6.5

Artibeus toltecus toltecus (Saussure, 1860)

Artibeus toltecus toltecus (Saussure, 1860)

Specimens.Matagalpa: Santa María de Ostuma, 1250 m, 5; 2 km N, 6 km E Esquipulas, 960 m, 1.

Specimens.Matagalpa: Santa María de Ostuma, 1250 m, 5; 2 km N, 6 km E Esquipulas, 960 m, 1.

This bat has been reported from Nicaragua previously by Andersen (1908:300) and Davis (1969:28), based on a total of four specimens. We netted this species at Santa María de Ostuma in patches of cloud forest at a cafetal. The specimen from near Esquipulas was taken in a net placed across a trail in second growth forest. Two females collected on 11 April and one taken on 30 June were pregnant (embryos 21, 26, and 12 mm, respectively, in crown-rump length). Testes of a male netted on 14 March were 7 mm in length, whereas those of two obtained on 11 April measured 4 and 7 mm. Selected measurements of our six specimens are given in Table 2.

This bat has been previously reported from Nicaragua by Andersen (1908:300) and Davis (1969:28), based on a total of four specimens. We captured this species at Santa María de Ostuma in patches of cloud forest at a coffee plantation. The specimen from near Esquipulas was caught in a net set across a trail in second-growth forest. Two females collected on April 11 and one taken on June 30 were pregnant (embryos measuring 21, 26, and 12 mm, respectively, in crown-rump length). The testes of a male caught on March 14 were 7 mm long, while those of two collected on April 11 measured 4 and 7 mm. Selected measurements of our six specimens are provided in Table 2.

Artibeus watsoni Thomas, 1901

Artibeus watsoni Thomas, 1901

Specimens.Chontales: 1 km N, 1.5 km W Villa Somoza, 330 m, 3. Nueva Segovia: 7 km N, 4 km E Jalapa, 600 m, 1. Zelaya: Bonanza, 850 ft, 6; S side Río Mico, El Recreo, 25 m, 6; Cara de Mono, 50 m, 1.

Specimens.Chontales: 1 km N, 1.5 km W Villa Somoza, 330 m, 3. Nueva Segovia: 7 km N, 4 km E Jalapa, 600 m, 1. Zelaya: Bonanza, 850 ft, 6; S side Río Mico, El Recreo, 25 m, 6; Cara de Mono, 50 m, 1.

Davis (1970a:393-394) recently reviewed the systematic status of this small fruit-eating bat and recorded specimens from southeastern Nicaragua; the species was first reported from the country by Andersen (1908:290), based on a specimen from the Escondido River. Our additional material reveals that A. watsoni occurs throughout eastern Nicaragua, the specimen from Nueva Segovia extending the known range as mapped by Davis (loc. cit.).

Davis (1970a:393-394) recently examined the classification of this small fruit-eating bat and noted specimens from southeastern Nicaragua; the species was first documented in the country by Andersen (1908:290), based on a specimen from the Escondido River. Our new findings show that A. watsoni is found throughout eastern Nicaragua, with the specimen from Nueva Segovia expanding the known range as mapped by Davis (loc. cit.).

A female from Bonanza (23 February) carried an embryo 14 mm in crown-rump length, whereas one from El Recreo (26 February) was not reproductively active; one of two females netted near Villa Somoza in early August was pregnant (embryo 21 mm in crown-rump length). Seven adult males collected in late February and early March had an average testicular length of 5.9 (5-7) mm; testes of two adults taken in late June and one captured in early August all measured 5 mm. The testes of young males (grayish pelage, partially unfused phalangeal epiphyses) were 2 or 3 mm in length.

A female from Bonanza (February 23) carried an embryo measuring 14 mm from crown to rump, while one from El Recreo (February 26) was not reproductively active. One of the two females captured near Villa Somoza in early August was pregnant (embryo 21 mm in crown-rump length). Seven adult males collected in late February and early March had an average testicular length of 5.9 mm (ranging from 5 to 7 mm); the testes of two adults taken in late June and one caught in early August all measured 5 mm. The testes of young males (with grayish fur and partially unfused phalangeal epiphyses) were 2 or 3 mm long.

Centurio senex senex Gray, 1842

Centurio senex Gray, 1842

Specimens.Chinandega: 4.5 km N Cosigüina, 15 m, 1; San Antonio, 35 m, 5. Matagalpa: 2 km N, 6 km E Esquipulas, 960 m, 3. Nueva Segovia: 7 km N, 4 km E Jalapa, 660 m, 1. Zelaya: S side Río Mico, El Recreo, 25 m, 1.

Specimens.Chinandega: 4.5 km N Cosigüina, 15 m, 1; San Antonio, 35 m, 5. Matagalpa: 2 km N, 6 km E Esquipulas, 960 m, 3. Nueva Segovia: 7 km N, 4 km E Jalapa, 660 m, 1. Zelaya: S side Río Mico, El Recreo, 25 m, 1.

Paradiso (1967) reviewed geographic variation in this unique bat, the type locality of which was restricted to Realejo, Chinandega, Nicaragua, by Goodwin (1946:327). Because additional material had not been reported from Nicaragua, Paradiso (op. cit.:598) felt it was "premature to restrict the type locality to a specific area in that country" (the holotype was obtained on the voyage of the H.M.S. Sulphur, which called at Realejo), and preferred the more general designation "west coast of Mexico or Central America." In view of the fact that we now have specimens from but a few miles distant from Realejo (at San Antonio), we see no reason to contest Goodwin's restriction of the type locality to that place.

Paradiso (1967) examined the geographic variation of this unique bat, which was originally found only in Realejo, Chinandega, Nicaragua, as noted by Goodwin (1946:327). Since no additional specimens had been reported from Nicaragua, Paradiso (op. cit.:598) believed it was "premature to restrict the type locality to a specific area in that country" (the holotype was collected during the voyage of the H.M.S. Sulphur, which stopped at Realejo), and preferred the broader designation "west coast of Mexico or Central America." Given that we now have specimens just a few miles from Realejo (at San Antonio), we see no reason to dispute Goodwin's limitation of the type locality to that location.

Specimens from San Antonio were collected along a small stream, bordered by a bilevel gallery forest, in an area otherwise planted mostly to cane. Many trees of the lower level were covered by an extremely thick network of vines, which were interwoven with branches and supported fallen leaves and debris from the upper level. This situation led to formation of small "rooms" or "cubicles" under some shorter trees; the bats were shot as they hung from small branches under one such tree, which was in fruit. All of our other specimens were captured in mist nets.

Specimens from San Antonio were collected along a small stream, bordered by a two-tiered gallery forest, in an area mostly planted with cane. Many of the trees in the lower level were covered by a very thick network of vines, which were woven with branches and supported fallen leaves and debris from the upper level. This created small "rooms" or "cubicles" under some of the shorter trees; the bats were shot as they hung from small branches beneath one such tree, which was bearing fruit. All of our other specimens were captured in mist nets.

Pregnant females were taken on the following dates (crown-rump length of embryo in parentheses): 25 February (12 mm), 2 March (17 mm), 15 March (14 mm); a nonpregnant female also was taken on 15 March. Five males captured at San Antonio on 9 and 10 March had an average testicular length of 5.6 (5-6) mm. A male taken in July had testes 4 mm in length, whereas those of one obtained on 14 March were 5 mm long.

Pregnant females were collected on the following dates (crown-rump length of the embryo in parentheses): February 25 (12 mm), March 2 (17 mm), March 15 (14 mm); a non-pregnant female was also collected on March 15. Five males captured in San Antonio on March 9 and 10 had an average testicular length of 5.6 (5-6) mm. A male caught in July had testes measuring 4 mm in length, while those from one obtained on March 14 were 5 mm long.

Selected measurements (average, with extremes in parentheses) of 11 adults (seven males and four females) are as follows: length of forearm, 42.5 (41.5-43.7) mm; condylobasal length (10 specimens only), 14.8 (14.5-15.0) mm; zygomatic breadth, 14.8 (14.4-15.1) mm; interorbital breadth, 5.0 (4.7-5.2) mm; breadth across upper molars, 10.6 (10.5-11.0) mm; length of maxillary toothrow, 5.0 (4.8-5.3) mm. These measurements generally agree with those given by Paradiso (1967:600) for 20 individuals from Panamá. Females in our series average slightly larger than do males in external and cranial measurements. Six males weighed an average of 22.9 (20.7-25.1) gms; one nonpregnant female weighed 17.1 gms.

Selected measurements (averages, with extremes in parentheses) of 11 adults (seven males and four females) are as follows: length of forearm, 42.5 (41.5-43.7) mm; condylobasal length (10 specimens only), 14.8 (14.5-15.0) mm; zygomatic breadth, 14.8 (14.4-15.1) mm; interorbital breadth, 5.0 (4.7-5.2) mm; breadth across upper molars, 10.6 (10.5-11.0) mm; length of maxillary tooth row, 5.0 (4.8-5.3) mm. These measurements generally agree with those provided by Paradiso (1967:600) for 20 individuals from Panamá. Females in our group are slightly larger than males in both external and cranial measurements. Six males weighed an average of 22.9 (20.7-25.1) gms; one non-pregnant female weighed 17.1 gms.

Diphylla ecaudata Spix, 1823

Diphylla ecaudata Spix, 1823

Specimens.Boaco: Los Cocos, 14 km S Boaco, 220 m, 5. Madriz: 5 km N, 9 km E Condega, 800 m, 1. Matagalpa: 2 km N, 6 km E Esquipulas, 960 m, 1.

Specimens.Boaco: Los Cocos, 14 km S Boaco, 220 m, 5. Madriz: 5 km N, 9 km E Condega, 800 m, 1. Matagalpa: 2 km N, 6 km E Esquipulas, 960 m, 1.

Our specimens constitute the first report of this species from Nicaragua. We follow Burt and Stirton (1961:37) in regarding D. ecaudata as monotypic.

Our samples are the first record of this species from Nicaragua. We agree with Burt and Stirton (1961:37) in considering D. ecaudata as monotypic.

Specimens from Los Cocos (three males and two females) were captured in a mist net stretched across a large, quiet pool in a small stream. The banks supported well-developed gallery forest, the understory of which had been cleared for human habitation; grassland (grazed) and small stands of secondary forest obtained beyond the riparian habitat. Domestic ducks, a possible source of food, were observed sleeping along the bank of this stream and on top of large boulders situated in the stream. Males from this locality taken on 20 February, 4 April, and 18 July had testicular lengths of 5, 6, and 6.5 mm, respectively. Two adult females collected there on 4 April were reproductively inactive. An adult male (testes 6 mm) from near Condega was captured on 23 June in a daytime roost in a small, cave-like crevice (see account of Peropteryx marcotis), and one from northeast of Esquipulas (testes 5 mm) was netted on 14 March along a forest trail (see account of Vampyressa pusilla).

Specimens from Los Cocos (three males and two females) were caught in a mist net stretched across a large, calm pool in a small stream. The banks were lined with well-developed gallery forest, though the understory had been cleared for human habitation; beyond the riparian area, there was grazed grassland and small patches of secondary forest. Domestic ducks, a potential food source, were seen resting along the bank of the stream and on large boulders in the water. Males from this location captured on February 20, April 4, and July 18 had testicular lengths of 5, 6, and 6.5 mm, respectively. Two adult females collected there on April 4 were reproductively inactive. An adult male (testes 6 mm) from near Condega was caught on June 23 in a daytime roost within a small, cave-like crevice (see account of Peropteryx marcotis), and one from northeast of Esquipulas (testes 5 mm) was netted on March 14 along a forest trail (see account of Vampyressa pusilla).

Natalus stramineus saturatus Dalquest and Hall, 1949

Natalus stramineus saturatus Dalquest and Hall, 1949

Specimens.Granada: 6 km S Nandaime, 5. Zelaya: S side Río Mico, El Recreo, 25 m, 2.

Specimens.Granada: 6 km south of Nandaime, 5. Zelaya: South side of Río Mico, El Recreo, 25 m, 2.

This funnel-eared species occupies an extensive geographic range (northern México to Brazil) but appears to be relatively rare in Middle America to the south of Guatemala. Our specimens represent the first of this species to be reported from Nicaragua.

This funnel-eared species has a wide geographic range (from northern Mexico to Brazil) but seems to be quite rare in Central America, south of Guatemala. Our specimens are the first of this species to be recorded from Nicaragua.

Both specimens from El Recreo, adult males, were caught by hand at night after they flew through an open door into a small room, possibly seeking insects that were swarming around a light bulb. Those from near Nandaime (three males, two females) were caught in a mist net set over the mouth of a well in which they were roosting; the well was approximately 2 m in diameter, and the water level was about 5 m below the rim. The females were not reproductively active (6 August).

Both specimens from El Recreo, adult males, were caught by hand at night after they flew through an open door into a small room, likely in search of insects that were swarming around a light bulb. The ones from near Nandaime (three males, two females) were captured in a mist net placed over the mouth of a well where they were roosting; the well was about 2 m in diameter, and the water level was around 5 m below the rim. The females were not reproductively active (6 August).

We have compared our Nicaraguan material with a number of Mexican specimens, including the holotype of N. s. saturatus and topotypes of N. s. mexicanus. We concur with Goodwin (1959) that in México there are two rather distinct subspecies, between which a broad zone of intergradation obtains. Our Nicaraguan specimens agree most closely with N. s. saturatus, and, until additional comparative material is available from Middle America, we tentatively refer them to that race. Handley (1966b:770) and Starrett and Casebeer (1968:15), however, regarded mexicanus as the appropriate name for specimens from Panamá and Costa Rica.

We have compared our Nicaraguan samples with several Mexican specimens, including the holotype of N. s. saturatus and topotypes of N. s. mexicanus. We agree with Goodwin (1959) that there are two quite distinct subspecies in Mexico, separated by a wide area of intergradation. Our Nicaraguan specimens match most closely with N. s. saturatus, and until we have more comparative material from Central America, we tentatively classify them as that subspecies. However, Handley (1966b:770) and Starrett and Casebeer (1968:15) considered mexicanus to be the correct name for specimens from Panama and Costa Rica.

Selected measurements of two males from El Recreo are: length of forearm, 41.2, 39.0 mm; greatest length of skull, 17.1, 16.5 mm; zygomatic breadth, 8.4, 8.5 mm; mastoid breadth, 7.7, 7.6 mm; breadth of braincase, 8.2, 8.1 mm; interorbital constriction, 3.2, 3.2 mm; length of maxillary toothrow, 7.3, 7.1 mm.

Selected measurements of two males from El Recreo are: forearm length, 41.2, 39.0 mm; greatest skull length, 17.1, 16.5 mm; zygomatic width, 8.4, 8.5 mm; mastoid width, 7.7, 7.6 mm; braincase width, 8.2, 8.1 mm; interorbital constriction, 3.2, 3.2 mm; length of maxillary tooth row, 7.3, 7.1 mm.

Myotis albescens (E. Geoffroy St.-Hilaire, 1806)

Myotis albescens (E. Geoffroy St.-Hilaire, 1806)

This handsome Myotis has been reported previously from Nicaragua only from the Caribbean lowlands—from the Escondido and Prinzapolka rivers (Miller and Allen, 1928:203). We netted two specimens, both males, at Santa Rosa, 17 km N and 15 km E Boaco, 300 m, Boaco, in central Nicaragua on 13 July and 9 August 1967, under the same conditions described in the account of Myotis elegans. Testes of our specimens were 7 and 6 mm, respectively, in length. External and cranial measurements are as follows: total length, 84, 83 mm; length of tail, 31, 33 mm; length of hind foot, 9, 9 mm; length of ear, 15, 15 mm; length of forearm, 32.9, 35.1 mm; weight, 6.4, 6.2 gms; greatest length of skull, 13.9, 14.4 mm; zygomatic breadth, 8.9, 9.0 mm; postorbital breadth, 3.8, 3.9 mm; breadth of braincase, 7.2, 7.3 mm; mastoid breadth, 7.4, 7.6 mm; breadth across upper molars, 5.6, 5.5 mm; length of maxillary toothrow, 5.3, 5.3 mm.

This attractive Myotis has only been previously reported from Nicaragua's Caribbean lowlands—from the Escondido and Prinzapolka rivers (Miller and Allen, 1928:203). We captured two male specimens at Santa Rosa, 17 km N and 15 km E of Boaco, at an elevation of 300 m, in central Nicaragua on July 13 and August 9, 1967, under the same conditions described in the account of Myotis elegans. The testes of our specimens measured 7 and 6 mm in length, respectively. External and cranial measurements are as follows: total length, 84, 83 mm; tail length, 31, 33 mm; hind foot length, 9, 9 mm; ear length, 15, 15 mm; forearm length, 32.9, 35.1 mm; weight, 6.4, 6.2 g; greatest skull length, 13.9, 14.4 mm; zygomatic breadth, 8.9, 9.0 mm; postorbital breadth, 3.8, 3.9 mm; braincase breadth, 7.2, 7.3 mm; mastoid breadth, 7.4, 7.6 mm; breadth across upper molars, 5.6, 5.5 mm; maxillary toothrow length, 5.3, 5.3 mm.

Myotis elegans Hall, 1962

Myotis elegans Hall, 1962

The first specimen on record of this rare Myotis from Central America, a nonpregnant female, was taken on 11 July 1967 at Santa Rosa, 17 km N and 15 km E Boaco, 300 m, Boaco. It was captured in a mist net as it foraged over a small stream that supported relatively well-developed gallery forest along the bank. The surrounding area was grassland (grazed), with small patches of tropical forest located on the sides of hills. Twenty other species of bats were taken at this same locality including Myotis argentatus and Myotis nigricans nigricans.

The first recorded specimen of this rare Myotis from Central America, a non-pregnant female, was collected on July 11, 1967, at Santa Rosa, 17 km north and 15 km east of Boaco, at an elevation of 300 m. It was caught in a mist net while it was foraging over a small stream that had a relatively well-developed gallery forest along the bank. The surrounding area was grazed grassland, with small patches of tropical forest on the hillsides. Twenty other bat species were captured at this same location, including Myotis argentatus and Myotis nigricans nigricans.

External and cranial measurements of our specimen, followed in parentheses by those of the female holotype from Veracruz, are: total length, 71 (79) mm; length of tail, 32 (34) mm; length of hind foot, 7 (7.5) mm; length of ear, 11 (12) mm; length of forearm, 32.9 (33.0) mm; greatest length of skull, 12.5 (12.4) mm; condylobasal length, 11.6 (11.9) mm; zygomatic breadth, 8.2 mm; breadth of braincase, 5.8 (6.1) mm; postorbital breadth, 3.2 (3.2) mm; length of maxillary toothrow, 4.7 (4.6) mm. Our female weighed 3.2 gms.

External and cranial measurements of our specimen, with those of the female holotype from Veracruz in parentheses, are: total length, 71 (79) mm; tail length, 32 (34) mm; hind foot length, 7 (7.5) mm; ear length, 11 (12) mm; forearm length, 32.9 (33.0) mm; greatest skull length, 12.5 (12.4) mm; condylobasal length, 11.6 (11.9) mm; zygomatic breadth, 8.2 mm; braincase breadth, 5.8 (6.1) mm; postorbital breadth, 3.2 (3.2) mm; maxillary toothrow length, 4.7 (4.6) mm. Our female weighed 3.2 grams.

Myotis nigricans nigricans (Schinz, 1821)

Myotis nigricans nigricans (Schinz, 1821)

Specimens.Boaco: Santa Rosa, 17 km N, 15 km E Boaco, 300 m, 2. Chinandega: 6.5 km N, 1 km E Cosigüina, 10 m, 1; San Antonio, 35 m, 1. Chontales: 1 km N, 2.5 km W Villa Somoza, 330 m, 1. Madriz: Darailí, 5 km N, 14 km E Condega, 940 m, 1. Nueva Segovia: 4.5 km N, 2 km E Jalapa, 680 m, 1. Rivas: 1 km NW Sapoá, 40 m, 1.

Specimens.Boaco: Santa Rosa, 17 km N, 15 km E Boaco, 300 m, 2. Chinandega: 6.5 km N, 1 km E Cosigüina, 10 m, 1; San Antonio, 35 m, 1. Chontales: 1 km N, 2.5 km W Villa Somoza, 330 m, 1. Madriz: Darailí, 5 km N, 14 km E Condega, 940 m, 1. Nueva Segovia: 4.5 km N, 2 km E Jalapa, 680 m, 1. Rivas: 1 km NW Sapoá, 40 m, 1.

This small Neotropical Myotis has been reported from Nicaragua only from the Caribbean lowlands of Zelaya (Davis et al., 1964:379). Our records indicate that it is widely distributed in the republic but evidently nowhere common. Females taken on 5 March and 6 August each carried a single embryo (7 and 13 mm in crown-rump length, respectively), whereas one obtained on 21 July evidenced no reproductive activity. Richard K. LaVal currently is studying the Myotis nigricans complex; pending his revision our specimens are tentatively assigned to M. n. nigricans.

This small Neotropical Myotis has only been reported from the Caribbean lowlands of Zelaya in Nicaragua (Davis et al., 1964:379). Our records show that it is found throughout the country, but it doesn't seem to be common anywhere. We collected females on March 5 and August 6, and each had one embryo (7 and 13 mm in crown-rump length, respectively), while one collected on July 21 showed no signs of reproductive activity. Richard K. LaVal is currently studying the Myotis nigricans complex, and until his revision is complete, we are tentatively classifying our specimens as M. n. nigricans.

Myotis simus riparius Handley, 1960

Myotis simus riparius Handley, 1960

A male (USNM 52800) from the Escondido River above Bluefields, originally reported by Miller and Allen (1928:203) as one of two M. albescens from that locality, provides the first record of the species from Nicaragua and the northernmost from Middle America. The cranial dimensions of this specimen, which compare well with those listed by Handley (1960:467) for the Panamanian holotype and paratype, are: greatest length of skull, 13.8 mm; zygomatic breadth, 8.9 mm; postorbital constriction, 3.5 mm; breadth of braincase, 6.7 mm; mastoid breadth, 7.4 mm; breadth across upper molars, 5.5 mm; length of maxillary toothrow, 5.2 mm.

A male (USNM 52800) from the Escondido River above Bluefields, originally reported by Miller and Allen (1928:203) as one of two M. albescens from that area, marks the first record of the species from Nicaragua and the northernmost record from Middle America. The skull measurements of this specimen, which align well with those listed by Handley (1960:467) for the Panamanian holotype and paratype, are: greatest length of skull, 13.8 mm; zygomatic breadth, 8.9 mm; postorbital constriction, 3.5 mm; breadth of braincase, 6.7 mm; mastoid breadth, 7.4 mm; breadth across upper molars, 5.5 mm; length of maxillary toothrow, 5.2 mm.

From Nicaraguan specimens of albescens, the skull of the specimen of simus examined (skin not seen) differs most conspicuously in having a less inflated braincase, narrower postorbital region, and a distinct sagittal crest.

From Nicaraguan specimens of albescens, the skull of the examined specimen of simus (skin not seen) stands out mainly by having a less rounded braincase, a narrower postorbital area, and a clear sagittal crest.

Eptesicus furinalis gaumeri (J. A. Allen, 1897)

Eptesicus furinalis gaumeri (J. A. Allen, 1897)

Specimens.Carazo: 3 km N, 4 km W Diriamba, 600 m, 7. Chinandega: Potosí, 5 m, 1; 6.5 km N, 1 km E Cosigüina, 10 m, 1; San Antonio, 35 m, 1. Chontales: 1 km N, 2.5 km W Villa Somoza, 330 m, 1; Hato Grande, 13 km S, 8 km W Juigalpa, 60 m, 3.

Specimens.Carazo: 3 km north, 4 km west of Diriamba, 600 m, 7. Chinandega: Potosí, 5 m, 1; 6.5 km north, 1 km east of Cosigüina, 10 m, 1; San Antonio, 35 m, 1. Chontales: 1 km north, 2.5 km west of Villa Somoza, 330 m, 1; Hato Grande, 13 km south, 8 km west of Juigalpa, 60 m, 3.

Davis (1965:234) reported two specimens of this species from Nicaragua, one from Carazo (listed above) and the other from 1 mi SE Yalagüina, 2600 ft, Madriz. The only other specimen on record from Nicaragua is from Greytown (Miller, 1897:100). Except for two individuals that were shot as they foraged in early evening, our specimens were captured in mist nets stretched over water or as described below.

Davis (1965:234) reported two specimens of this species from Nicaragua, one from Carazo (mentioned earlier) and the other from 1 mile SE of Yalagüina, at 2600 ft, Madriz. The only other specimen recorded from Nicaragua is from Greytown (Miller, 1897:100). Except for two individuals that were shot while foraging in the early evening, our specimens were caught in mist nets set up over water or as described below.

Some of the bats captured northwest of Diriamba were taken in a net placed across the center of a water-filled, concrete cistern that was located in a large, open space used for drying coffee beans. Open at the top, the cistern was approximately 12 m in diameter, and the water level was approximately 3 m below the rim. Several Artibeus jamaicensis, A. lituratus, and Molossus pretiosus were caught in the same net. Aside from bats removed from the net, a few Eptesicus and Molossus were retrieved from the water where they fell, apparently stunned, after colliding with the wall of the cistern. The fact that a number of decomposed bats of these two species were observed floating in the water indicated that such entrapment was not caused by the placement of our net.

Some of the bats caught northwest of Diriamba were captured in a net stretched across the center of a water-filled concrete cistern located in a large open area used for drying coffee beans. Open at the top, the cistern was about 12 m in diameter, with the water level around 3 m below the rim. Several Artibeus jamaicensis, A. lituratus, and Molossus pretiosus were caught in the same net. Besides the bats taken from the net, a few Eptesicus and Molossus were pulled from the water where they fell, apparently stunned, after hitting the wall of the cistern. The presence of several decomposed bats of these two species floating in the water suggested that their entrapment wasn't due to the placement of our net.

A female pregnant with two embryos (crown-rump length 15 mm) was captured on 22 April, whereas one taken on 5 July was lactating. Adult males taken in March (two) and April (two) had testes 5, 7, 9, and 10 mm long, respectively.

A female pregnant with two embryos (crown-rump length 15 mm) was captured on April 22, while one captured on July 5 was nursing. Adult males captured in March (two) and April (two) had testes measuring 5, 7, 9, and 10 mm long, respectively.

Rhogeessa tumida tumida H. Allen, 1866

Rhogeessa tumida tumida H. Allen, 1866

Specimens.Boaco: Santa Rosa, 17 km N, 15 km E Boaco, 300 m, 2. Carazo: 3 km N, 4 km W Diriamba, 600 m, 2. Chinandega: 6 km N, 1 km E Cosigüina, 10 m, 3; Hda. Bellavista, 720 m, Volcán Casita, 1. Matagalpa: 1 km NE Esquipulas, 420 m, 1.

Specimens.Boaco: Santa Rosa, 17 km N, 15 km E Boaco, 300 m, 2. Carazo: 3 km N, 4 km W Diriamba, 600 m, 2. Chinandega: 6 km N, 1 km E Cosigüina, 10 m, 3; Hda. Bellavista, 720 m, Volcán Casita, 1. Matagalpa: 1 km NE Esquipulas, 420 m, 1.

This small vespertilionid occurs throughout much of Central America, but the available material still is insufficient to permit an accurate assessment of geographic variation in that region. All but one of our specimens were trapped in mist nets. Those captured near Diriamba were taken in a net stretched across a trail bordered by high cut-banks, whereas those from other localities were netted over small streams. The one bat from Bellavista was shot as it foraged in the evening along trees bordering the hacienda yard.

This small bat species is found across much of Central America, but there isn't enough data yet to clearly assess geographic differences in that area. Almost all of our specimens were caught in mist nets. The ones captured near Diriamba were trapped in a net set up across a trail with high banks on either side, while those from other locations were caught over small streams. The one bat from Bellavista was shot while it was foraging in the evening along trees next to the hacienda yard.

Two females taken on 5 March each had swollen uteri and may have been in an early stage of pregnancy. Others taken on 13 July, 9 August, and 15 August were reproductively inactive. Males had testes that measured 2.5 (March), 3 (July), and 2 (August) mm.

Two females taken on March 5 had swollen uteri and might have been in the early stages of pregnancy. Others taken on July 13, August 9, and August 15 were not reproductively active. Males had testes measuring 2.5 mm (March), 3 mm (July), and 2 mm (August).

We have compared our material with representative specimens from México of R. parvula and R. tumida, as defined by Goodwin (1958); we are not wholly convinced that these are valid species (rather than variable geographic races of the same species). Certainly there is need for additional investigation of the problem. Our Nicaraguan specimens most closely resemble R. t. tumida (see Goodwin, op. cit.:3), to which they are tentatively referred.

We have compared our material with representative specimens from Mexico of R. parvula and R. tumida, as defined by Goodwin (1958); we are not completely convinced that these are valid species (rather than just variable geographic races of the same species). There is definitely a need for more investigation into this issue. Our Nicaraguan specimens closely resemble R. t. tumida (see Goodwin, op. cit.:3), to which they are tentatively assigned.

Selected measurements of two females from Boaco and a male from Matagalpa, followed by the average (and extremes) of three males and three females from western Nicaragua (Carazo and Chinandega), are, respectively: length of forearm, 30.4, 28.5, 28.3, 28.2 (27.5-29.0) mm; greatest length of skull, 12.8, 12.7, 12.8, 12.1 (11.8-12.5) mm; zygomatic breadth, 8.1, 8.4, 8.6, 8.1 (7.8-8.6) mm; mastoid breadth, 7.1, 7.2, 7.2, 6.8 (6.6-7.1) mm; breadth of braincase, 6.0, 5.7, 6.0, 5.6 (5.3-6.1) mm; postorbital constriction, 3.3, 3.0, 3.3, 3.0 (2.9-3.2) mm; length of maxillary toothrow, 4.7, 4.7, 4.5, 4.3 (4.2-4.6) mm; weight, 4.4, 4.3, 3.8, 3.5 (3.1-3.9) gms.

Selected measurements for two females from Boaco and one male from Matagalpa, along with the averages (and extremes) for three males and three females from western Nicaragua (Carazo and Chinandega), are as follows: forearm length, 30.4, 28.5, 28.3, 28.2 (27.5-29.0) mm; greatest skull length, 12.8, 12.7, 12.8, 12.1 (11.8-12.5) mm; zygomatic breadth, 8.1, 8.4, 8.6, 8.1 (7.8-8.6) mm; mastoid breadth, 7.1, 7.2, 7.2, 6.8 (6.6-7.1) mm; braincase breadth, 6.0, 5.7, 6.0, 5.6 (5.3-6.1) mm; postorbital constriction, 3.3, 3.0, 3.3, 3.0 (2.9-3.2) mm; maxillary toothrow length, 4.7, 4.7, 4.5, 4.3 (4.2-4.6) mm; weight, 4.4, 4.3, 3.8, 3.5 (3.1-3.9) gms.

Tadarida laticaudata yucatanica (Miller, 1902)

Tadarida laticaudata yucatanica (Miller, 1902)

One adult male (testes 5 mm) of this free-tailed bat from Potosí, 5 m, Chinandega, on the Cosigüina Peninsula, provides the only record of the genus Tadarida from Nicaragua. This specimen was netted after dark over a small stream that flowed into the Bay of Fonseca approximately 200 yards below our nets (see account of Noctilio leporinus). Other species taken in the same net included Carollia subrufa, Sturnira lilium, Eptesicus furinalis, Molossus ater, and Molossus molossus.

One adult male (testes 5 mm) of this free-tailed bat from Potosí, 5 m, Chinandega, on the Cosigüina Peninsula, is the only record of the genus Tadarida in Nicaragua. This specimen was caught after dark over a small stream that flowed into the Bay of Fonseca, about 200 yards below our nets (see account of Noctilio leporinus). Other species caught in the same net included Carollia subrufa, Sturnira lilium, Eptesicus furinalis, Molossus ater, and Molossus molossus.

Selected measurements of the male are: total length, 92 mm; length of tail, 31 mm; length of hind foot, 10 mm; length of ear, 15 mm; length of forearm, 39.2 mm; weight, 10.3 gms; greatest length of skull, 17.2 mm; zygomatic breadth, 10.6 mm; postorbital constriction, 4.0 mm; breadth of braincase, 8.6 mm; length of maxillary toothrow, 6.5 mm.

Selected measurements of the male are: total length, 92 mm; tail length, 31 mm; hind foot length, 10 mm; ear length, 15 mm; forearm length, 39.2 mm; weight, 10.3 g; greatest skull length, 17.2 mm; zygomatic width, 10.6 mm; postorbital constriction, 4.0 mm; braincase width, 8.6 mm; maxillary tooth row length, 6.5 mm.

Eumops auripendulus (Shaw, 1800)

Eumops auripendulus (Shaw, 1800)

A broken skull (USNM 339917) of a female of this species from Hda. Mecatepe [2 km N, 11.5 km E Nandaime, ca. 40 m], Granada, represents the only known specimen of the genus Eumops from Nicaragua. This bat was obtained by M. K. Clark on 25 August 1964, but the conditions under which it was captured are not known. Available cranial measurements are: zygomatic breadth, 12.6 mm; breadth of braincase, 10.7 mm; postorbital breadth, 4.3 mm; rostral breadth, 7.4 mm; length of maxillary toothrow, 9.1 mm; length of mandibular c-m3, 10.0 mm.

A broken skull (USNM 339917) of a female of this species from Hda. Mecatepe [2 km N, 11.5 km E Nandaime, ca. 40 m], Granada, is the only known specimen of the genus Eumops from Nicaragua. This bat was collected by M. K. Clark on August 25, 1964, but the circumstances of its capture are unknown. The available cranial measurements are: zygomatic breadth, 12.6 mm; breadth of braincase, 10.7 mm; postorbital breadth, 4.3 mm; rostral breadth, 7.4 mm; length of maxillary tooth row, 9.1 mm; length of mandibular c-m3, 10.0 mm.

Molossus ater nigricans Miller, 1902

Molossus ater nigricans Miller, 1902

Specimens.Chinandega: Potosí, 5 m, 21; 4.5 km N Cosigüina, 15 m, 2; El Paraíso, 1 km N Cosigüina, 20 m, 17; Hda. Bellavista, 720 m, Volcán Casita, 4; Hda. San Isidro, 10 km S Chinandega, 20 m, 2; San Antonio, 35 m, 2. Nueva Segovia: Corozo, 15 km NNE Jalapa, 660 m, 1; 3.5 km S, 2 km W Jalapa, 660 m, 4.

Specimens.Chinandega: Potosí, 5 m, 21; 4.5 km N of Cosigüina, 15 m, 2; El Paraíso, 1 km N of Cosigüina, 20 m, 17; Hda. Bellavista, 720 m, Volcán Casita, 4; Hda. San Isidro, 10 km S of Chinandega, 20 m, 2; San Antonio, 35 m, 2. Nueva Segovia: Corozo, 15 km NNE of Jalapa, 660 m, 1; 3.5 km S, 2 km W of Jalapa, 660 m, 4.

Only one specimen of this large molossid (from Volcán de Chinandega—J. A. Allen, 1908:670) has been reported from Nicaragua. All of our specimens are from the northern or northwestern part of the country. Many were shot in early evening as they followed a straight, direct flight pattern (presumably from day-roosts toward foraging or watering areas); the series from Potosí was netted over a small stream as described in the account of Noctilio leporinus. We confidently refer our material to the species currently known as ater, although assignment to the subspecies nigricans is tentative.

Only one specimen of this large molossid (from Volcán de Chinandega—J. A. Allen, 1908:670) has been reported from Nicaragua. All of our specimens are from the northern or northwestern part of the country. Many were shot in the early evening as they followed a straight, direct flight path (presumably from day roosts to foraging or watering spots); the series from Potosí was captured over a small stream as described in the account of Noctilio leporinus. We confidently categorize our material under the species currently known as ater, although the assignment to the subspecies nigricans is tentative.

Of 21 females autopsied in the first week of March on the Cosigüina Peninsula, seven were pregnant, each with a single embryo (7-22 mm in crown-rump length, average 16.7). Ten males taken at the same time had an average testicular length of 5.7 (2-7) mm, whereas the testes of a male obtained on 9 March at San Antonio measured 8 mm. None of five females obtained in late July in Nueva Segovia evidenced reproductive activity, nor did two of three females taken in July and one taken in August from Chinandega; the fourth Chinandegan female, taken on 17 July, carried an embryo that was 36 mm in length. Two males from southern Chinandega (mid-July) had testes 7 and 4 mm long.

Of the 21 females examined in the first week of March on the Cosigüina Peninsula, seven were pregnant, each with one embryo (7-22 mm in crown-rump length, average 16.7). Ten males collected at the same time had an average testicular length of 5.7 (2-7) mm, while the testes of a male taken on March 9 in San Antonio measured 8 mm. None of the five females collected in late July in Nueva Segovia showed signs of reproductive activity, nor did two of the three females taken in July and one in August from Chinandega; however, the fourth female from Chinandega, collected on July 17, carried an embryo that measured 36 mm in length. Two males from southern Chinandega (mid-July) had testes that were 7 and 4 mm long.

Representative measurements of 10 specimens of each sex from Nicaragua are given in Table 4.

Representative measurements of 10 samples from each gender in Nicaragua are shown in Table 4.

Molossus molossus aztecus Saussure, 1860

Molossus molossus aztecus Saussure, 1860

Specimens.Chinandega: Potosí, 5 m, 1; Hda. San Isidro, 10 km S Chinandega, 20 m, 1 (USNM). Boaco: Santa Rosa, 17 km N, 15 km E Boaco, 300 m, 7. Managua: 3 mi SW Managua, 8. Rivas: Rivas, 60 m, 4.

Specimens.Chinandega: Potosí, 5 m, 1; Hda. San Isidro, 10 km S of Chinandega, 20 m, 1 (USNM). Boaco: Santa Rosa, 17 km N, 15 km E of Boaco, 300 m, 7. Managua: 3 mi SW of Managua, 8. Rivas: Rivas, 60 m, 4.

This small free-tailed species has been reported from Nicaragua by Felten (1957:14), who listed two females from Corinto. Our records indicate that it is widely distributed, but of localized occurrence. Specimens from Potosí and Santa Rosa were captured in mist nets over streams (as described in the accounts of Noctilio leporinus and Myotis elegans, respectively). The specimen from Hda. San Isidro was shot in flight, whereas those from Rivas were captured in a daytime retreat in a deep crevice in a concrete school building. We have no precise knowledge of the conditions under which bats from 3 mi SW Managua were obtained but suspect they were taken from a building.

This small free-tailed species was reported from Nicaragua by Felten (1957:14), who noted two females from Corinto. Our records show that it is widely spread but found in specific areas. Specimens from Potosí and Santa Rosa were caught in mist nets over streams (as detailed in the accounts of Noctilio leporinus and Myotis elegans, respectively). The specimen from Hda. San Isidro was shot while flying, while those from Rivas were captured in a daytime hiding spot in a deep crack in a concrete school building. We don't have exact details on the conditions under which the bats from 3 miles SW of Managua were collected but suspect they were taken from a building.

Females in our series were reproductively active at all times for which we have information—early March through mid-July—as follows: a female from Potosí (6 March) carried an embryo that measured 5 mm (crown-rump length) as did one from Santa Rosa (21 March, 17 mm in length); two of three females taken 3 mi SW Managua on 28 March were pregnant (embryos 13 and 15 mm), whereas each of two collected there on 3 May were gravid (embryos 27 and 30 mm); one female from Rivas (25 June) carried an embryo (30 mm) and another was lactating and accompanied by a small (forearm, 19.7 mm) hairless juvenile; and, finally, one of six females netted at Santa Rosa on 13 July was pregnant (embryo 23 mm), but the others evinced no reproductive activity. An adult male, taken at Rivas with the females mentioned above, had testes that were 6 mm in length.

Females in our study were reproductively active during the entire period for which we have data—early March to mid-July—as follows: a female from Potosí (6 March) carried an embryo measuring 5 mm (crown-rump length), as did one from Santa Rosa (21 March, 17 mm in length); two out of three females caught 3 miles southwest of Managua on 28 March were pregnant (embryos 13 and 15 mm), while both of the two collected there on 3 May were pregnant (embryos 27 and 30 mm); one female from Rivas (25 June) had an embryo (30 mm) and another was lactating with a small (forearm, 19.7 mm) hairless juvenile; finally, one of six females caught at Santa Rosa on 13 July was pregnant (embryo 23 mm), but the others showed no signs of reproductive activity. An adult male caught at Rivas along with the mentioned females had testes measuring 6 mm in length.

Bats of the genus Molossus are in need of thorough systematic study. We think most, if not all, mainland populations of small Molossus with pale-based hairs pertain to the species Molossus molossus, originally described from the Lesser Antilles. Although there is some variation in size and overall color among our Nicaraguan samples, all seem to represent that species. Because specimens from Nicaragua closely resemble examples of M. m. aztecus from Jalisco, México (Table 3), in external and cranial proportions, we tentatively refer them to aztecus.

Bats of the genus Molossus need a detailed systematic study. We believe that most, if not all, mainland populations of small Molossus with light-colored hairs belong to the species Molossus molossus, which was originally identified from the Lesser Antilles. Although there is some variation in size and overall color among our samples from Nicaragua, they all appear to represent that species. Because the specimens from Nicaragua closely resemble those of M. m. aztecus from Jalisco, Mexico (Table 3), in external and skull measurements, we tentatively assign them to aztecus.

In our field experience in both Middle and South America, colonies of M. molossus tend to be extremely localized, with individual populations or demes frequently separated by many miles of territory in which the species seemingly does not regularly occur.

In our fieldwork in both Central and South America, colonies of M. molossus are usually very localized, with individual populations or groups often spaced many miles apart in areas where the species doesn’t seem to occur regularly.

Table 3.—Selected measurements of adult Molossus molossus.

Table 3.—Selected measurements of adult Molossus molossus.

Number of specimens averaged or catalogue number, and sex Length
of
forearm
Greatest
length
of
skull
Condylo-
basal length
Zygo-
matic breadth
Mastoid breadth Breadth of brain-
case
Postorbital constriction Length
of
maxillary toothrow
Breadth across upper molars
Western Jalisco, México
KU 109075, ♂ 38.2 18.0 15.3 11.0 10.5 9.1 3.8 6.2 7.9
KU 109076, ♂ 37.3 17.8 15.3 11.0 10.5 9.2 3.6 6.3 8.1
KU 120540, ♂ 37.7 17.8 15.3 11.0 10.8 8.9 3.9 6.3 8.1
Average 15 (♀) 37.1 17.2 14.8 10.7 10.3 8.9 3.8 6.1 7.9
Minimum 36.0 16.5 14.2 10.4 10.1 8.5 3.7 6.0 7.7
Maximum 38.1 17.7 15.2 11.0 10.5 9.2 3.9 6.2 8.2
Departamento de Chinandega, Nicaragua
USNM 337552, ♂ 39.0± 18.2 15.5 11.0 10.7 9.0 3.7 6.0 8.0
KU 114140, ♀ 37.3 16.8 14.7 10.7 9.9 8.7 3.4 "5.9 7.4
3 mi SW Managua, Nicaragua
KU 71009, ♂ 39.8 18.7 16.1 11.1 10.9 8.9 3.8 6.3 8.0
KU 71011, ♂ 39.4 18.5 16.5 11.0 9.2 3.7 6.7 8.0
Average 5 (♀) 38.9 17.5 15.4 10.7 10.3 9.0 3.6 6.1 7.8
Minimum 38.1 17.2 15.1 10.5 10.1 8.9 3.5 5.9 7.6
Maximum 39.7 18.0 15.9 10.9 10.6 9.1 3.7 6.3 8.0
Santa Rosa, Boaco, Nicaragua
Average 6 (♀) 36.0 17.5 14.7 10.8 10.6 9.1 3.7 6.0 8.0
Minimum 35.5 17.3 14.4 10.6 10.4 9.0 3.6 5.7 7.8
Maximum 36.7 17.8 15.1 11.0 10.8 9.2 3.8 6.2 8.2
Rivas, Nicaragua
KU 106291, ♂ 38.2 18.8 16.1 11.5 10.9 9.4 3.8 6.6 8.3
KU 106290, ♀ 39.6 17.4 15.0 11.0 10.5 9.1 3.6 6.0 7.7
KU 106293, ♀ 37.2 17.3 14.8 10.7 10.2 9.0 3.5 5.7 7.8

The localized and presumably highly inbred populations may have diverged morphologically, in some cases at least, to a degree that mensural differences can be demonstrated even between samples from the same general geographic area. Localized variation and relatively marked secondary sexual variation (unrecognized by some earlier workers), superimposed on geographic variation, have resulted in application of a relatively large number of names to these small Molossus. Felten (1957:13-14), for example, apparently used different specific names for males and females from El Salvador, and Gardner (1966) employed three different specific names for North American specimens. Only when material is available for a detailed study of variation throughout the Neotropics can the perplexing mosaic of characters in these small Molossus be assessed adequately.

The localized and presumably highly inbred populations may have diverged in form, at least in some cases, to a point where measurable differences can be shown even between samples from the same general geographic region. Localized variation and significant differences between males and females (which some earlier researchers overlooked), layered on top of geographic variation, have led to a relatively large number of names being assigned to these small Molossus. For instance, Felten (1957:13-14) apparently used different specific names for males and females from El Salvador, and Gardner (1966) assigned three different specific names to North American specimens. Only when there’s material available for a thorough study of variation throughout the Neotropics can we truly understand the confusing array of traits in these small Molossus.

We have seen no specimens from Nicaragua that are identifiable as Molossus bondae, another relatively small species that has been reported from Greytown (Miller, 1913a:89) and from elsewhere in Central America by other authors (Goodwin, 1942c:145; Handley, 1966b:772; Gardner et al., 1970:727). Our examination of the female holotype of M. bondae reveals that it is larger than M. molossus, corresponding in size to females recently reported from Costa Rica by Gardner et al. (loc. cit.), and that bondae has dark-based hairs. The two males reported by Goodwin (loc. cit.) from Honduras as bondae, would seem to be too small for that species, based on the measurements listed; also, these specimens allegedly have white-based hairs and probably represent M. molossus as here defined.

We haven't seen any specimens from Nicaragua that can be identified as Molossus bondae, which is another relatively small species reported from Greytown (Miller, 1913a:89) and elsewhere in Central America by different authors (Goodwin, 1942c:145; Handley, 1966b:772; Gardner et al., 1970:727). Our examination of the female holotype of M. bondae shows that it is larger than M. molossus, matching the size of females recently reported from Costa Rica by Gardner et al. (loc. cit.), and that bondae has dark-based hairs. The two males reported by Goodwin (loc. cit.) from Honduras as bondae appear to be too small for that species based on the measurements provided; additionally, these specimens reportedly have white-based hairs and likely represent M. molossus as defined here.

Molossus pretiosus pretiosus Miller, 1902

Molossus pretiosus pretiosus Miller, 1902

Specimens.Boaco: Los Cocos, 14 km S Boaco, 220 m, 28; San Francisco, 19 km S, 2 km E Boaco, 200 m, 3. Carazo: 3 km N, 4 km W Diriamba, 600 m, 25. Managua: 6 mi WSW Managua, 3.

Specimens.Boaco: Los Cocos, 14 km S of Boaco, 220 m, 28; San Francisco, 19 km S, 2 km E of Boaco, 200 m, 3. Carazo: 3 km N, 4 km W of Diriamba, 600 m, 25. Managua: 6 mi WSW of Managua, 3.

This relatively large mastiff bat has not been reported previously from Nicaragua. Specimens from several localities in Boaco were captured in mist nets over streams; most of those from northwest of Diriamba were shot in the early evening as they foraged high around large trees in a coffee finca, but several were netted over a water-filled concrete tank or found in the water in the tank as detailed in the account of Eptesicus furinalis. At Los Cocos, bats that we netted seemed to be emerging from a hollow located high in a tree over the stream.

This fairly large mastiff bat hasn't been previously reported in Nicaragua. Specimens from various locations in Boaco were caught in mist nets over streams; most of those from northwest of Diriamba were shot in the early evening while they were foraging high around large trees in a coffee plantation, but several were netted over a water-filled concrete tank or found in the water in the tank, as described in the account of Eptesicus furinalis. At Los Cocos, the bats we netted appeared to be coming out of a hollow located high in a tree over the stream.

Selected measurements of M. p. pretiosus from Nicaragua, which compare favorably with those of topotypes from Venezuela, are listed in Table 4 along with measurements of M. ater and M. sinaloae. The taxonomic relationships of M. pretiosus and M. ater are less than clear, and some authors (Handley, 1966b:773, for instance) have suggested that the two may be conspecific. Whatever their ultimate relationships may prove to be, two distinctive taxa seem to be present in Nicaragua; the larger is assignable to ater and the smaller to pretiosus, as currently understood. Furthermore, the presumed presence of two large Molossus with dark-based hairs elsewhere in Central America (Dilford C. Carter, personal communication) and in southeastern México (Goodwin, 1956:4; Goodwin and Greenhall, 1964:20) argues for specific recognition of pretiosus.

Selected measurements of M. p. pretiosus from Nicaragua, which compare favorably with those of topotypes from Venezuela, are listed in Table 4 along with measurements of M. ater and M. sinaloae. The taxonomic relationships of M. pretiosus and M. ater are not entirely clear, and some authors (Handley, 1966b:773, for example) have suggested that the two might be the same species. Regardless of their ultimate relationships, two distinct taxa appear to be present in Nicaragua; the larger one is classified as ater and the smaller as pretiosus, as currently defined. Additionally, the likely existence of two large Molossus with dark-based hairs in other parts of Central America (Dilford C. Carter, personal communication) and in southeastern Mexico (Goodwin, 1956:4; Goodwin and Greenhall, 1964:20) supports the specific recognition of pretiosus.

The species ater and pretiosus differ mainly in size (Table 4), some measurements clearly separating the two when sexual dimorphism is considered. Also, the average weights of 18 nonpregnant females and four males of pretiosus (all adults) collected on 20 February 1968 at Los Cocos, were 20.9 (14.6-23.8) and 27.0 (24.6-31.7) gms, respectively, significantly smaller than corresponding figures for 11 nonpregnant females and nine males of M. a. nigricans taken two weeks later on the Cosigüina Peninsula—29.1 (26.1-33.0) and 32.9 (29.3-35.1) gms. It is of note that we have not collected these two large species at the same localities in Nicaragua, and it is possible that one competitively excludes the other in local situations.

The species ater and pretiosus mainly differ in size (Table 4), with some measurements clearly distinguishing the two when considering sexual dimorphism. The average weights of 18 non-pregnant females and four males of pretiosus (all adults) collected on February 20, 1968, at Los Cocos were 20.9 grams (ranging from 14.6 to 23.8) and 27.0 grams (ranging from 24.6 to 31.7), respectively, which are significantly smaller than the corresponding weights for 11 non-pregnant females and nine males of M. a. nigricans taken two weeks later on the Cosigüina Peninsula—29.1 grams (ranging from 26.1 to 33.0) and 32.9 grams (ranging from 29.3 to 35.1). It’s worth noting that we have not collected these two large species from the same locations in Nicaragua, and it’s possible that one species competitively excludes the other in local situations.

Table 4.—Selected measurements of adults of three species of Molossus from Nicaragua.

Table 4.—Selected measurements of adult individuals from three species of Molossus found in Nicaragua.

Number
of
specimens
averaged
or
catalogue number, and sex
Length
of
forearm
Greatest
length
of
skull
Condylobasal
length
Zygomatic
breadth
Breadth
of
braincase
Length
of
maxillary
toothrow
Breadth
across
upper
canines
Molossus ater nigricans, Departamento de Chinandega, Nicaragua
Average 10 (♂) 49.5 23.2 20.2 14.3 11.0 8.2 6.1
Minimum 48.2 22.8 19.9 14.1 10.5 8.0 6.0
Maximum 50.7 23.5 20.5 14.9 11.2 8.3 6.3
Average 10 (♀) 49.0 22.0 19.2 13.6 10.7 7.8 5.8
Minimum 47.1 21.5 18.8 13.3 10.5 7.6 5.6
Maximum 51.2 22.5 20.0 14.1 11.0 8.2 6.1
Molossus pretiosus pretiosus, Departamento de Boaco, Nicaragua
Average 8 (♂) 45.1 21.7 18.8 13.4 10.6 7.6 5.9
Minimum 44.1 21.0 18.3 13.1 10.2 7.4 5.6
Maximum 46.1 22.2 19.1 13.7 10.9 7.9 6.1
Average 23 (♀) 43.6 20.2 17.7 12.5 10.1 7.3 5.2
Minimum 41.0 19.5 17.2 12.2 9.5 7.1 5.0
Maximum 44.8 20.7 18.2 13.1 10.4 7.6 5.6
6 mi SW Managua, Nicaragua
KU 70135, ♂ 44.8 21.7 18.6 13.0 10.2 7.7 5.8
KU 70137, ♂ 45.1 21.6 19.0 13.2 10.7 7.7 5.8
KU 70136, ♀ 43.5 19.9 17.8 12.7 10.3 7.5 5.5
3 km N, 4 km W Diriamba, Nicaragua
Average 7 (♂) 44.8 21.2 18.5 13.0 10.5 7.4 5.5
Minimum 43.8 20.7 18.3 12.7 10.2 7.2 5.4
Maximum 45.7 21.3 18.8 13.3 10.9 7.6 5.5
Average 9 (♀) 44.0 20.7 18.0 12.6 10.2 7.3 5.3
Minimum 42.0 20.0 17.4 12.0 10.0 7.0 5.0
Maximum 45.5 21.2 18.6 13.0 10.6 7.5 5.5
Molossus sinaloae sinaloae, El Recreo, Nicaragua
Average 4 (♂) 47.6 21.2 18.6 12.3 9.8 7.7 5.4
Minimum 46.7 20.7 18.3 12.0 9.7 7.6 5.3
Maximum 48.6 21.5 18.9 12.6 10.0 7.9 5.5
Average 10 (♀) 47.5 20.2 17.8 11.8 9.7 7.3 5.1
Minimum 46.2 20.0 17.6 11.5 9.5 7.1 5.0
Maximum 48.3 20.4 18.0 12.0 9.8 7.5 5.5

Among females from Departamento de Boaco, none of 18 collected on 20 February was pregnant, whereas three of four obtained on 4 April were gravid (embryos 13, 15, and 17 mm in crown-rump length) as was one (embryo 21 mm) taken on 18 July. Among those from northwest of Diriamba, two of three were pregnant on 30-31 March (embryos 7 and 13 mm in length), whereas only three of eight carried embryos (29, 31, and 34 mm) in mid-August at a time when flying young also were collected. Additionally, a female captured 6 mi WSW Managua on 27 March had an embryo that measured 11 mm.

Among females from the Boaco Department, none of the 18 collected on February 20 were pregnant, while three out of four gathered on April 4 were pregnant (with embryos measuring 13, 15, and 17 mm in crown-rump length), along with one (embryo measuring 21 mm) collected on July 18. Among those from northwest of Diriamba, two out of three were pregnant on March 30-31 (with embryos measuring 7 and 13 mm in length), while only three out of eight carried embryos (measuring 29, 31, and 34 mm) in mid-August, which was also when young flying specimens were collected. Additionally, a female captured 6 miles WSW of Managua on March 27 had an embryo measuring 11 mm.

Four adult males collected on 20 February had an average testicular length of 5.7 (4-7) mm, whereas those of seven obtained in late March averaged 5.0 (4-6) mm; testes of two adults taken on 18 July were 6 and 6.5 mm, and those of three taken in the period 12-15 August were 5 mm in length.

Four adult males gathered on February 20 had an average testicular length of 5.7 (4-7) mm, while those of seven collected in late March averaged 5.0 (4-6) mm; the testes of two adults captured on July 18 measured 6 and 6.5 mm, and those of three collected between August 12-15 were 5 mm in length.

Molossus sinaloae sinaloae J. A. Allen, 1906

Molossus sinaloae sinaloae J. A. Allen, 1906

Specimens.Boaco: Santa Rosa, 17 km N, 15 km E Boaco, 300 m, 1. Managua: 1 km N Sabana Grande, 1; 3 mi SW Managua, 1; 8 km SW Managua, 400 m, 3. Rivas: San Juan del Sur, 20 m, 1. Zelaya: S side Río Mico, El Recreo, 25 m, 73.

Specimens.Boaco: Santa Rosa, 17 km N, 15 km E Boaco, 300 m, 1. Managua: 1 km N Sabana Grande, 1; 3 mi SW Managua, 1; 8 km SW Managua, 400 m, 3. Rivas: San Juan del Sur, 20 m, 1. Zelaya: S side Río Mico, El Recreo, 25 m, 73.

This mastiff bat can be distinguished easily from the other two large species of Molossus in Nicaragua in that the hairs of the dorsum are relatively long and are pale, frequently white, basally. The species has been reported twice previously from Nicaragua—from Greytown by Miller (1913a:89) and by Goodwin and Greenhall (1964:13), who listed four individuals from Río Grande.

This mastiff bat can be easily identified from the other two large species of Molossus in Nicaragua because its back hairs are relatively long and light in color, often white at the base. This species has been reported twice before in Nicaragua—from Greytown by Miller (1913a:89) and by Goodwin and Greenhall (1964:13), who documented four individuals from Río Grande.

Most of our specimens were taken from buildings. A large series obtained in a house at El Recreo in late June 1966 consisted only of females and young, many of which were nearly full grown; some females still were lactating and at least two were pregnant (on 23 June—crown-rump length of embryos 12 and 14 mm). A group taken from another house at El Recreo (from cracks in the stone wall and from between rafters and the corrugated metal roof) in late July 1966 consisted of adult males, lactating females, and young. Similarly, an adult male, a pregnant female (embryo 14 mm in crown-rump length), and a hairless juvenile were shot, on 16 February 1964, from a small colony in an attic of a large house southwest of Managua; Glossophaga soricina also was taken in this attic. The testes of an adult male captured in June were 6 mm in length; those of four taken in July were 5, 5, 6, and 7 mm, and one obtained in August had testes that measured 3 mm.

Most of our samples were collected from buildings. A large group obtained from a house in El Recreo in late June 1966 included only females and young ones, many of which were almost fully grown; some females were still nursing and at least two were pregnant (on June 23—crown-rump length of embryos 12 and 14 mm). A group collected from another house in El Recreo (from cracks in the stone wall and from between rafters and the corrugated metal roof) in late July 1966 included adult males, nursing females, and young. Likewise, an adult male, a pregnant female (embryo 14 mm in crown-rump length), and a hairless juvenile were shot on February 16, 1964, from a small colony in an attic of a large house southwest of Managua; Glossophaga soricina was also found in this attic. The testes of an adult male captured in June measured 6 mm in length; those of four collected in July measured 5, 5, 6, and 7 mm, and one obtained in August had testes that measured 3 mm.

Selected measurements of M. s. sinaloae from El Recreo are given in Table 4.

Selected measurements of M. s. sinaloae from El Recreo are provided in Table 4.

CHECKLIST OF NICARAGUAN BATS

Nicaraguan Bats Checklist

Following is a checklist of the 68 species of bats thus far reported from Nicaragua. Citations are given only to publications that are primary sources of information on Nicaraguan specimens. In some instances, specimens were reported in the literature under a name different than the one here employed; we have mentioned earlier-used names where it seemed appropriate to do so. Taxa preceded by an asterisk are included in the present paper.

Following is a checklist of the 68 species of bats that have been reported from Nicaragua. Citations are given only to publications that are primary sources of information on Nicaraguan specimens. In some cases, specimens were reported in the literature under a name different from the one used here; we have mentioned previously used names where it seemed appropriate. Taxa preceded by an asterisk are included in this paper.

Family EMBALLONURIDAE

Family Emballonuridae

Rhynchonycteris naso (Wied-Neuwied, 1820).—J. A. Allen (1908:669, 1910:110), Sanborn (1937:327), Davis et al. (1964:375, 379).

Rhynchonycteris naso (Wied-Neuwied, 1820).—J. A. Allen (1908:669, 1910:110), Sanborn (1937:327), Davis et al. (1964:375, 379).

Saccopteryx bilineata (Temminck, 1838-1839).—J. A. Allen (1910:110), Sanborn (1937:331), Jones (1964a:506).

Saccopteryx bilineata (Temminck, 1838-1839).—J. A. Allen (1910:110), Sanborn (1937:331), Jones (1964a:506).

*Saccopteryx leptura (Schreber, 1774).—Davis et al. (1964:374), Jones (1964a:506).

*i>Saccopteryx leptura (Schreber, 1774).—Davis et al. (1964:374), Jones (1964a:506).

Cormura brevirostris (Wagner, 1843).—J. A. Allen (1910:110—specimens listed as Peropteryx canina from Peña Blanca, see Sanborn, 1937:348), Miller (1924:38), Sanborn (1937:349), Goodwin (1942c:119).

Cormura brevirostris (Wagner, 1843).—J. A. Allen (1910:110—specimens listed as Peropteryx canina from Peña Blanca, see Sanborn, 1937:348), Miller (1924:38), Sanborn (1937:349), Goodwin (1942c:119).

Peropteryx kappleri kappleri Peters, 1867.—J. A. Allen (1908:669, 1910:110—as P. canina), Sanborn (1937:344).

Peropteryx kappleri kappleri Peters, 1867.—J. A. Allen (1908:669, 1910:110—as P. canina), Sanborn (1937:344).

*Peropteryx macrotis macrotis (Wagner, 1843).

*Peropteryx macrotis macrotis (Wagner, 1843).

Balantiopteryx plicata plicata Peters, 1867.—Jones et al. (1962:152), Davis et al. (1964:375), Jones (1964a:506).

Balantiopteryx plicata plicata Peters, 1867.—Jones et al. (1962:152), Davis et al. (1964:375), Jones (1964a:506).

Diclidurus virgo Thomas, 1903.—Alston (1879-82:30).

Diclidurus virgo Thomas, 1903.—Alston (1879-82:30).

Family NOCTILIONIDAE

Family Noctilionidae

*Noctilio labialis labialis (Kerr, 1792).—Goodwin (1942c:121, 1946:297), Davis et al. (1964:376), Kohls et al. (1965:344), Wenzel et al. (1966:578).

*Noctilio labialis labialis (Kerr, 1792).—Goodwin (1942c:121, 1946:297), Davis et al. (1964:376), Kohls et al. (1965:344), Wenzel et al. (1966:578).

*Noctilio leporinus mexicanus Goldman, 1915.—Davis et al. (1964:376).

*Noctilio leporinus mexicanus Goldman, 1915.—Davis et al. (1964:376).

Family PHYLLOSTOMATIDAE

Family PHYLLOSTOMATIDAE

*Pteronotus davyi fulvus (Thomas, 1892).

*Pteronotus davyi fulvus (Thomas, 1892).

*Pteronotus parnellii fuscus J. A. Allen, 1911.—Miller (1902:402), Rehn (1904:203).

*Pteronotus parnellii fuscus J. A. Allen, 1911.—Miller (1902:402), Rehn (1904:203).

*Pteronotus suapurensis (J. A. Allen, 1904).—Goodwin (1942a:88, 1946:299, 1953:246).

*Pteronotus suapurensis (J. A. Allen, 1904).—Goodwin (1942a:88, 1946:299, 1953:246).

Micronycteris brachyotis (Dobson, 1879).—Goodwin (1946:302—as M. sylvestris), Sanborn (1949:224—as M. platyceps), Goodwin and Greenhall (1961:231).

Micronycteris brachyotis (Dobson, 1879).—Goodwin (1946:302—as M. sylvestris), Sanborn (1949:224—as M. platyceps), Goodwin and Greenhall (1961:231).

Micronycteris hirsuta (Peters, 1869).—Valdez and LaVal (1971:247).

Micronycteris hirsuta (Peters, 1869).—Valdez and LaVal (1971:247).

*Micronycteris megalotis mexicana Miller, 1898.—G. M. Allen (1929:130).

*i>Micronycteris megalotis mexicana Miller, 1898.—G. M. Allen (1929:130).

*Micronycteris megalotis microtis Miller, 1898.—Miller (1898:328, 1900:154), Lyon and Osgood (1909:263), J. A. Allen (1910:110), Poole and Schantz (1942:133).

*i>Micronycteris megalotis microtis Miller, 1898.—Miller (1898:328, 1900:154), Lyon and Osgood (1909:263), J. A. Allen (1910:110), Poole and Schantz (1942:133).

Micronycteris minuta (Gervais, 1856).—Valdez and LaVal (1971:248).

Micronycteris minuta (Gervais, 1856).—Valdez and LaVal (1971:248).

Micronycteris schmidtorum Sanborn, 1935.—Davis et al. (1964:378).

Micronycteris schmidtorum Sanborn, 1935.—Davis et al. (1964:378).

Macrophyllum macrophyllum (Schinz, 1821).—Davis et al. (1964:378), Jones (1964a:506).

Macrophyllum macrophyllum (Schinz, 1821).—Davis et al. (1964:378), Jones (1964a:506).

*Tonatia nicaraguae Goodwin, 1942.—Goodwin (1942b:205, 1946:305, 1953:246), Davis and Carter (1962:67), Valdez and LaVal (1971:248).

Tonatia nicaraguae Goodwin, 1942.—Goodwin (1942b:205, 1946:305, 1953:246), Davis and Carter (1962:67), Valdez and LaVal (1971:248).

Phyllostomus discolor verrucosus Elliot, 1905.—Jones (1964a:507), Wenzel et al. (1966:598).

Phyllostomus discolor verrucosus Elliot, 1905.—Jones (1964a:507), Wenzel et al. (1966:598).

*Phyllostomus hastatus panamensis J. A. Allen, 1904.—Goodwin (1942c:126), Wenzel et al. (1966:597).

*Phyllostomus hastatus panamensis J. A. Allen, 1904.—Goodwin (1942c:126), Wenzel et al. (1966:597).

*Trachops cirrhosus coffini Goldman, 1925.—Carter et al. (1966:491).

*Trachops cirrhosus coffini Goldman, 1925.—Carter et al. (1966:491).

*Chrotopterus auritus auritus (Peters, 1856).

*Chrotopterus auritus auritus (Peters, 1856).

Vampyrum spectrum nelsoni (Goldman, 1917).—Gray (1844:18), Dobson (1878:471), Alston (1879-82:39), J. A. Allen (1910:111), Goldman (1917:116), Goodwin (1946:310).

Vampyrum spectrum nelsoni (Goldman, 1917).—Gray (1844:18), Dobson (1878:471), Alston (1879-82:39), J. A. Allen (1910:111), Goldman (1917:116), Goodwin (1946:310).

Glossophaga commissarisi Gardner, 1962.—Davis et al. (1964:380), Jones (1964a:507).

Glossophaga commissarisi Gardner, 1962.—Davis et al. (1964:380), Jones (1964a:507).

Glossophaga soricina leachii (Gray, 1844).—Gray (1844:18), Dobson (1878:501), Alston (1879-82:44), J. A. Allen (1910:111), Miller (1913b:419), Alvarez (1963:400), Davis et al. (1964:380), Starrett and de la Torre (1964:57).

Glossophaga soricina leachii (Gray, 1844).—Gray (1844:18), Dobson (1878:501), Alston (1879-82:44), J. A. Allen (1910:111), Miller (1913b:419), Alvarez (1963:400), Davis et al. (1964:380), Starrett and de la Torre (1964:57).

*Anoura geoffroyi lasiopyga (Peters, 1868).

*Anoura geoffroyi lasiopyga (Peters, 1868).

*Choeroniscus godmani (Thomas, 1903).—Handley (1966a:86).

*Choeroniscus godmani (Thomas, 1903).—Handley (1966).

*Lichonycteris obscura Thomas, 1895.—Thomas (1895:57), Davis et al. (1964:380).

*Lichonycteris obscura Thomas, 1895.—Thomas (1895:57), Davis et al. (1964:380).

*Carollia castanea H. Allen, 1890.—-Davis et al. (1964:379).

*Carollia castanea* H. Allen, 1890.—Davis *et al.* (1964:379).

Carollia perspicillata azteca Saussure, 1860.—Hahn (1907:112), J. A. Allen (1908:669, 1910:111), Davis et al. (1964:379), Starrett and de la Torre (1964:58).

Carollia perspicillata azteca Saussure, 1860.—Hahn (1907:112), J. A. Allen (1908:669, 1910:111), Davis et al. (1964:379), Starrett and de la Torre (1964:58).

Carollia subrufa (Hahn, 1905).—Davis and Carter (1962:71), Davis et al. (1964:379).

Carollia subrufa (Hahn, 1905).—Davis and Carter (1962:71), Davis et al. (1964:379).

Sturnira lilium parvidens Goldman, 1917.—Davis et al. (1964:379), Starrett and de la Torre (1964:59), Jones (1964a:507).

Sturnira lilium parvidens Goldman, 1917.—Davis et al. (1964:379), Starrett and de la Torre (1964:59), Jones (1964a:507).

*Sturnira ludovici ludovici Anthony, 1924.

*Sturnira ludovici ludovici* Anthony, 1924.

Uroderma bilobatum convexum Lyon, 1902.—Davis et al. (1964:382), Jones (1964a:507), Davis (1968:695).

Uroderma bilobatum convexum Lyon, 1902.—Davis et al. (1964:382), Jones (1964a:507), Davis (1968:695).

Uroderma bilobatum molaris Davis, 1968.—Davis et al. (1964:382), Davis (1968:697).

Uroderma bilobatum molaris Davis, 1968.—Davis et al. (1964:382), Davis (1968:697).

*Uroderma magnirostrum Davis, 1968.—Davis (1968:680).

*Uroderma magnirostrum Davis, 1968.—Davis (1968:680).

*Vampyrops helleri Peters, 1866.—Davis et al. (1964:383), Jones (1964a:507), Valdez and LaVal (1971:248).

*Vampyrops helleri Peters, 1866.—Davis et al. (1964:383), Jones (1964a:507), Valdez and LaVal (1971:248).

*Vampyrodes major G. M. Allen, 1908.—J. A. Allen (1910:112), Goodwin (1946:320).

*Vampyrodes major G. M. Allen, 1908.—J. A. Allen (1910:112), Goodwin (1946:320).

*Vampyressa nymphaea Thomas, 1909.

*Vampyressa nymphaea Thomas, 1909.

*Vampyressa pusilla thyone Thomas, 1909.—Starrett and de la Torre (1964:60).

*Vampyressa pusilla thyone Thomas, 1909.—Starrett and de la Torre (1964:60).

*Chiroderma villosum jesupi J. A. Allen, 1900.

*i>Chiroderma villosum jesupi J. A. Allen, 1900.

Ectophylla alba H. Allen, 1892.—H. Allen (1892:441, 1898:267), Lyon and Osgood (1909:266), Poole and Schantz (1942:129), Goodwin (1942c:134, 1946:323), Goodwin and Greenhall (1962:4). Type locality (Río Segovia) placed in Comarca de El Cabo, Nicaragua, by Miller and Kellogg (1955:77).

Ectophylla alba H. Allen, 1892.—H. Allen (1892:441, 1898:267), Lyon and Osgood (1909:266), Poole and Schantz (1942:129), Goodwin (1942c:134, 1946:323), Goodwin and Greenhall (1962:4). The type location (Río Segovia) was identified in Comarca de El Cabo, Nicaragua, by Miller and Kellogg (1955:77).

Artibeus inopinatus Davis and Carter, 1964.—Davis and Carter (1964:120).

Artibeus inopinatus Davis and Carter, 1964.—Davis and Carter (1964:120).

Artibeus jamaicensis paulus Davis, 1970.—Andersen (1908:266), Davis (1970b:121).

Artibeus jamaicensis paulus Davis, 1970.—Andersen (1908:266), Davis (1970b:121).

Artibeus jamaicensis richardsoni J. A. Allen, 1908.—Andersen (1908:267), J. A. Allen (1908:669), Elliot (1917:168), Goodwin (1953:249), Davis and Carter (1964:120), Davis et al. (1964:379), Starrett and de la Torre (1964:60), Davis (1970b:116).

Artibeus jamaicensis richardsoni J. A. Allen, 1908.—Andersen (1908:267), J. A. Allen (1908:669), Elliot (1917:168), Goodwin (1953:249), Davis and Carter (1964:120), Davis et al. (1964:379), Starrett and de la Torre (1964:60), Davis (1970b:116).

Artibeus lituratus palmarum J. A. Allen and Chapman, 1897.—Andersen (1908:279), Davis and Carter (1964:120), Davis et al. (1964:379), Starrett and de la Torre (1964:61).

Artibeus lituratus palmarum J. A. Allen and Chapman, 1897.—Andersen (1908:279), Davis and Carter (1964:120), Davis et al. (1964:379), Starrett and de la Torre (1964:61).

Artibeus phaeotis palatinus Davis, 1970.—Davis (1970a:401).

Artibeus phaeotis palatinus Davis, 1970.—Davis (1970a:401).

Artibeus phaeotis phaeotis (Miller, 1902).—Davis et al. (1964:379), Davis (1970a: 399).

Artibeus phaeotis phaeotis (Miller, 1902).—Davis et al. (1964:379), Davis (1970a: 399).

*Artibeus toltecus hesperus Davis, 1969.

*Artibeus toltecus hesperus Davis, 1969.*

*Artibeus toltecus toltecus (Saussure, 1860).—Andersen (1908:300), Davis (1969:28).

*i>Artibeus toltecus toltecus (Saussure, 1860).—Andersen (1908:300), Davis (1969:28).

*Artibeus watsoni Thomas, 1901.—Andersen (1908:290), Davis and Carter (1962:71), Davis (1970a:393).

*Artibeus watsoni Thomas, 1901.—Andersen (1908:290), Davis and Carter (1962:71), Davis (1970a:393).

*Centurio senex senex Gray, 1842.—Goodwin (1946:327, restricted type locality to El Realejo, Nicaragua).

*i>Centurio senex senex Gray, 1842.—Goodwin (1946:327, limited the specific location to El Realejo, Nicaragua).

Desmodus rotundus murinus Wagner, 1840.—J. A. Allen (1908:670, 1910:113).

Desmodus rotundus murinus Wagner, 1840.—J. A. Allen (1908:670, 1910:113).

*Diphylla ecaudata Spix, 1823.

Diphylla ecaudata Spix, 1823.

Family NATALIDAE

Family NATALIDAE

*Natalus stramineus saturatus Dalquest and Hall, 1949.

*i>Natalus stramineus saturatus Dalquest and Hall, 1949.

Family THYROPTERIDAE

Family Thyropteridae

Thyroptera discifera discifera (Lichtenstein and Peters, 1854).—Miller (1896:111, 1931:411), Goodwin (1946:330).

Thyroptera discifera discifera (Lichtenstein and Peters, 1854).—Miller (1896:111, 1931:411), Goodwin (1946:330).

Family VESPERTILIONIDAE

Family VESPERTILIONIDAE

*Myotis albescens (E. Geoffroy St.-Hilaire, 1806).—Miller and G. M. Allen (1928:203).

*Myotis albescens (E. Geoffroy St.-Hilaire, 1806).—Miller and G. M. Allen (1928:203).

*Myotis elegans Hall, 1962.

*Myotis elegans Hall, 1962.

*Myotis nigricans nigricans (Schinz, 1821).—Davis et al. (1964:379), McDaniel and Coffman (1970:223).

*Myotis nigricans nigricans (Schinz, 1821).—Davis et al. (1964:379), McDaniel and Coffman (1970:223).

*Myotis simus riparius Handley, 1960.

Handley, 1960.

*Eptesicus furinalis gaumeri (J. A. Allen, 1897).—Miller (1897:100), Davis (1965:234).

*Eptesicus furinalis gaumeri (J. A. Allen, 1897).—Miller (1897:100), Davis (1965:234).

Lasiurus borealis frantzii (Peters, 1871).—Davis and Carter (1962:73).

Lasiurus borealis frantzii (Peters, 1871).—Davis and Carter (1962:73).

*Rhogeessa tumida tumida H. Allen, 1866.—J. A. Allen (1910:113), Goodwin (1958:3).

*Rhogeessa tumida tumida H. Allen, 1866.—J. A. Allen (1910:113), Goodwin (1958:3).

Family MOLOSSIDAE

Family Molossidae

*Tadarida laticaudata yucatanica (Miller, 1902).

*Tadarida laticaudata yucatanica* (Miller, 1902).

*Eumops auripendulus (Shaw, 1800).

*Eumops auripendulus (Shaw, 1800).

*Molossus ater nigricans Miller, 1902.—J. A. Allen (1908:670).

*i>Molossus ater nigricans Miller, 1902.—J. A. Allen (1908:670).

Molossus bondae J. A. Allen, 1904.—Miller (1913a:89).

Molossus bondae J. A. Allen, 1904.—Miller (1913a:89).

*Molossus molossus aztecus Saussure, 1860.—Felten (1957:14).

*i>Molossus molossus aztecus Saussure, 1860.—Felten (1957:14).

*Molossus pretiosus pretiosus Miller, 1902.

*Molossus pretiosus pretiosus Miller, 1902.

*Molossus sinaloae sinaloae J. A. Allen, 1906.—Miller (1913a:89), Goodwin and Greenhall (1964:13).

*Molossus sinaloae sinaloae J. A. Allen, 1906.—Miller (1913a:89), Goodwin and Greenhall (1964:13).

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The University of Kansas Publications, Museum of Natural History, started with volume 1 in 1946 and ended with volume 20 in 1971. Shorter research papers that were previously published in this series are now released as Occasional Papers, Museum of Natural History. The Miscellaneous Publications, Museum of Natural History, began with number 1 in 1946. Longer research papers are published in that series. Monographs of the Museum of Natural History were launched in 1970.


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