638 THYROPTERA. 
Fic. 129. THYROPTERA DISCIFERA. 
No. 105419 U. S. Nat. Mus. Coll. 
2% times nat. size. Face enlarged 7 times. 
den in fur; tips pointed, lower two-thirds of outer margin convex, 
terminating midway between tragus and angle of mouth; upper por- 
tion of outer margin concave; ‘‘tragus short, with a prominent 
lobule opposite the base of its inner margin directed forward, ab- 
ruptly narrowed in upper third, very acutely pointed and curved 
inward’’; deep pit between nostrils; lower lip with groove on each 
side inclosing an angular cushion; wing membrane to ankles; a cir- 
cular hollow disk on ball of thumb and another smaller one on sole 
of the foot; upper incisors directed forward and inward, bifid; 
lower incisors trifid; canines small; the first upper premolar smaller 
than second, and first lower premolar also smaller than second but 
larger than canine; middle lower molar largest. 
Fig. CIV. THYROPTERA DISCIFERA. 
No. 102923 U. S. Nat. Mus. Coll. 
