62 NORTH AMERICAN FAUNA 75 



Specimens examined (31)— 2.5 km SE of Puerto Viejo [2 males, CM; 1 male, 

 TCWC]; Finca La Selva, 3 km S of Puerto Viejo, 70 m [10 males, 8 females, 

 KU; 1 male, MSB]; 7.3 mi SE of Puerto Viejo [1 male, TTU]; 11 km S, 4.5 km 

 W of Puerto Viejo, 270 m [1 female, USNM]; 1 km S, 11.5 km E of San Miguel, 

 680 m [4 males, 2 females, USNM; 1 female, UNA]. 



Additional records (3)— 4 mi W of Puerto Viejo, 300 ft [2 females, TCWC]; 

 5.5 mi S, 1 mi E of Puerto Viejo, 400 ft [1 female, TCWC]. 



CaroUia castanea 

 Allen's Short-tailed Bat 



Allen's short-tailed bats are found from Honduras to Bolivia (Fig. 46). Carollia 

 castanea is a monotypic species. 



These bats are more likely to be taken in primary forest than their congeners, 

 but also are common in second growth habitats. Roosting sites include caves, tun- 

 nels, hollow trees, and under overhanging roots along stream banks (Pine 1972). 

 They feed on a variety of fruits, and perhaps occasional insects (Gardner 1977). 

 The reproductive cycle is bimodally polyestrous (Wilson 1979). 



This species is common throughout lowland Costa Rica. LaVal and Fitch (1977) 

 captured 302 at La Selva. We found it only at the 300-m site in Braulio Carrillo, 

 where we captured specimens in nets set over a stream, and along a trail in hillside 

 primary forest. 



Specimens examined (41)— Puerto Viejo, Rio Sarapiqui, 300 ft [1 female, 

 FMNH; 3 males, 5 females, KU; 3 males, 2 females, UMMZ]; 2.5 km SE of 

 Puerto Viejo [2 males, 1 female, CM; 2 males, TCWC]; Finca La Selva, 3 km 

 S of Puerto Viejo, 70 m [1 male, 4 females, KU; 1 male, 5 females, LACM; 

 2 females, 1 sex ?, MSB]; 7.3 mi SE of Puerto Viejo [2 females, TTU]; 11 km 

 S, 4.5 km W of Puerto Viejo, 270 m [4 males, 1 female, USNM; 1 male, UNA]. 



Additional records (3)— 5.5 mi S, 1 mi E of Puerto Viejo, ca. 400 ft [3 males, 

 TCWC]. 



Carollia perspicillata 

 Seba's Short-tailed Bat 



Seba's short-tailed bats are distributed from Puebla, Mexico, to Argentina 

 (Fig. 47). The Costa Rican subspecies, Carollia perspicillata azteca, is found 

 throughout Central America. 



This is one of the most widespread and abundant species of Neotropical bats. 

 It is particularly common in second growth and disturbed habitats. Roosts are known 

 from caves, tunnels, hollow trees, buildings, culverts, and under large leaves (Pine 

 1972). These bats specialize on fruits of the genus Piper, but take a wide variety 

 of other fruits, and also insects during some seasons (Gardner 1977). The reproduc- 

 tive pattern is the familiar one of bimodal polyestry (Wilson 1979). Fleming (1983a, 

 1988) summarized the results of more than 10 years of detailed studies of the life 

 history of this species in Costa Rica. 



