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. 7944 Am. Mus. Nat. Hist. Coll. 

 Twice nat. size. Incisors enlarged 5 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 mm H. castaneum 670 



628. perspicillatum Linn., Syst. Nat., i, 1758, p. 31; i, 1766, p. 47. 

 brevicauda (Phyllostoma), Wied, Schinz. Thierreich, i, 1821, p. 164. 



