612 



BALANTIOPTERYX. 



POUCHED BAT. 



Type locality. Puento Arenas, Costa Rica. 



Geogr. Distr. State of Jalisco, opposite Tres Marias Islands, 

 Mexico, into Central America. 



Genl. Char. Nostrils resembling those of Taphozous, no groove 

 above; ear conch straight on inner margin, with a tooth near base; 

 outer margin straight terminating on a level with the angle of the 

 mouth. 



*Color. Above dark brown, beneath paler; a white line extends 

 from the ankles to the extremity of the fore finger along the margin 



FIG. XCV. BALANTIOPTERYX PLICATA. 



Slightly larger than life size. 



of the wing membrane; wing and interfemoral membranes partly 

 furred. 



Measurements. Total length, 29.2; forearm, 43.1; foot, 8.8; ear, 

 13.9. Skull: occipito-nasal length, 13; Hensel, 10; zygomatic width, 

 9; interorbital width, 3; width of braincase at auditory meatus, 8; 

 height of braincase above auditory meatus, 7 ; distance across last 

 molar from outer edge, 7; length of upper molar series, 4; palatal 

 length, 4; length of mandible, 10; length of lower molar series, 4. 



573. infusca (Saccopteryx), Thomas, Ann. Mag. Nat. Hist., 6th Ser., 



xx, 1897, P- 546. 

 THOMAS'S BAT. 



Type locality. Cachavi, Northern Ecuador. 



Geogr. Distr. Coban, Guatemala, to Ecuador, South America. 



Genl. Char. Similar to S. plicata, but smaller and darker; ears 

 narrower; posterior edge of wing membrane not white. 



Color. Dark chestnut brown above, paler beneath. 



Measurements. Total length, 55; tail, 13; ear, 11.3; tragus, 3.3; 

 calcar, 14. 



*An alcoholic specimen in the Field Museum when dried is a lavender gray 

 above and paler beneath, and it does not seem that it could ever have been 

 dark brown. It came from Puenta de Ixtla, State of Morelos, Mexico. 



