24 NORTH AMERICAN FAUNA 75 



Cormura brevirostris 

 Wagner's Sac-winged Bat 



Wagner's sac- winged bats are found from Nicaragua south through Central 

 America to the Amazon basin in South America (Fig. 11). This monotypic species 

 is the only member of the genus. 



The biology of this uncommon emballonurid is poorly known. It is known 

 to roost in hollow trees in South America (Sanborn 1941; Tuttle 1970). Fleming 

 et al. (1972) reported insects from the stomachs of Panamanian Cormura. They 

 also reported pregnant females only in April and May, suggesting a monestrous 

 reproductive cycle. 



Although rare at La Selva, we caught individuals occasionally in the second 

 growth of the successional plots. Our only specimen from Parque Nacional Braulio 

 Carrillo was taken in a mist net over the Rio Cantarrana near the 300-m base camp. 

 It is the only specimen record of this species for northern and eastern Costa Rica. 



Specimen examined (1)— 1 1 km S, 4.5 km W of Puerto Viejo, 270 m [1 male, 

 USNM]. 



Cyttarops alecto 

 Short-eared Bat 



The short-eared bat is known only from eastern Nicaragua, Costa Rica, Guyana, 

 and Amazonian Brazil. The genus contains only this monotypic species. All speci- 

 mens of Cyttarops alecto have come from tropical lowland rain forest. Natural 

 history information on this rare species is limited to that provided by Starrett (1972). 

 All Costa Rican specimens have been taken from roosts under palm leaves. This 

 species is presumably insectivorous, like other emballonurids. Nothing is known 

 of the reproductive cycle. 



This rare species was known only by the type specimen from Brazil and a 

 single specimen from Guyana (Thomas 1913) until 1964 when three individuals 

 were reported from Los Diamantes, about 25 km east of Parque Nacional Braulio 

 Carrillo (Starrett and de la Torre 1964). Starrett and Casebeer (1968) reported eight 

 specimens from Puerto Viejo, 3 km north of La Selva. We did not encounter this 

 species at higher elevations. 



Specimens examined (5)— Puerto Viejo de Sarapiqui [1 male, 4 females, 

 LACM]. 



Peropteryx kappleri 

 Greater Doglike Bat 



Greater doglike bats are found from Veracruz, Mexico, south throughout Cen- 

 tral America and much of tropical South America to southern Brazil (Fig. 12). 

 The nominate subspecies, Peropteryx kappleri kappleri, is found throughout the 

 range except for the type locality of the other named subspecies (P. k. intermedia) 

 in Peru. 



Individuals have been taken from sea level up to 1,500 m and in a variety 

 of habitats. They roost singly or in small groups of mixed sex in shallow caves. 



