668 HEMIDERMA. 
Ears moderate; muzzle rather narrow; interorbital constriction 
considerable; superior outline of skull concave; nose-leaf moderately 
developed; a V-shaped groove in the center of the chin inclosing a 
wart, and having one also on the outside of groove; tail short, in- 
closed in interfemoral membrane; wing membrane attached to end of 
tibia; angle of ridge of molars obtuse; cingulum of upper molars with 
one interior tubercle. 
Fig. 141. HEMIDERMA PERSPICILLATUM. 
No. 7o44 Am. Mus, Nat. Hist. Coll. 
[wice nat. size. Incisors enlarged § times. 
KEY TO: THE SPECIES: 
A. Muzzle conical; ear moderate; tail in base of 
membrane. 
a. Large wart in V-shaped groove on chin, mar- PAGE 
gined by warts; forearm, 40 mm........ H. perspicillatum 668 
b. Warts on chin in three rows, those in middle 
the largest; forearm, 32 mms). Gon. aes cee H.castaneum 670 
628. perspicillatum Linn., Syst. Nat., 1, L758, Ps 3754, 1766. Dae. 
brevicauda (Phyllostoma), Wied, Schinz. Thierreich, 1, 1821, p. 164. 
