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. 
TuHomas’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, r4. 
*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. 
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