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).
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.
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).
Noctilio labialis 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.
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.
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).
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.