92 Dr. J. E. Gray on the Genera of Noctilionide. 
skull thin; brain-case large, swollen; orbital pit narrow, with- 
out postorbital process ; face suddenly narrow and bent up. 
21. Furriprervs, Bonap. and Gervais, not Tomes = Mosia, 
Gray, Furia, F. Cuv. 
(10.) Emballonurina. Face conical, hairy ; forehead convex; 
skull solid; forehead flattish ; face short, broad, swollen at the 
sides, with a prominent postarbital process. 
* Upper cutting-teeth distinct. Interfemoral membrane produced. 
22. Centronycreris. Upper cutting-teeth 2.2. Inter- 
femoral membrane conical, produced. 
** Upper cutting-teeth distinct. Interfemoral membrane truncated. 
23. EmpaLitonura. Upper cutting-teeth 1.1. Wings simple. 
24. Saccopreryx. Upper cutting-teeth 2.2. Wings with 
a pouch at the inside of the arm-bones. 
25. ProposcipEA. Nose produced, truncated obliquely. 
Upper cutting-teeth 1.1; “side of the face swollen ; postorbital 
process very prominent.” 
*** Upper cutting-teeth none. Interfemoral membrane truncated. 
26. Urocryrrus. Upper cutting-teeth none. Forehead flat. 
Wings simple. 
27. TarHozous. Forehead with a deep concavity ; chin with- 
out any large transverse fold. 
28. Saccotaimus. Forehead with a deep concavity; chin 
with a large transverse fold. 
(11.) Diclidurina. Face short, broad, hairy; forehead flat. 
Tail with last joint valvular. Wings broad. 
29. DicLtipuRUs. 
Family Noctilionide. 
The nostrils on the sides of the nose. The cutting-teeth in 
the middle of the interspace between the canine teeth. Canines 
wide apart in front. The grinders acutely tubercular, three in 
each jaw on each side, the hinder upper short and broad, with 
one or two small false grinders in front of them. Skull thick ; 
forehead flat ; intermaxillaries small, close in front. 
I. Tail short, enclosed in the large truncated interfemoral mem- 
brane, with the tip in the upper surface. 
(1.) Noctilionina. Face simple. Tail simple. 
1. Nocrit1o. Face conical, tubercular ; upper lip dependent. 
Cutting-teeth large, conical. 
