Dr. J. E. Gray on the Genera of Vespertilionide. 91 
the canines by a space. Palate of skull not reaching beyond 
the last molar. 
1]. Naratus. Wings to upper part of ankles. Upper cutting- 
teeth 2.2; false grinders? 
12. Minropreris. Wings to upper part of ankles. False 
grinders 3. 
13. FurreLLa. Wings to ankles ; heel-bone very long. Upper 
cutting-teeth 2.2; false grinders 3. (Furia, Temm., Furi- 
pterus, Tomes, not Bonap.) 
14, Tuyrortera. Wings to the end of the toes; thumbs 
and toes with suctorial disks = Hyonycteris, Tomes. 
(5.) ? Nycticellina. ‘Upper cutting-teeth separate, equidis- 
tant. Palate without any notch in front.” An aberrant form. 
15. Nycticeuvus, Gervais. 
3. Ears close together, in front, elongate, often united ; face elon- 
gate, narrow, hairy ; forehead convex ; nose with a naked space ; 
skull with a swollen brain-case, and narrow face. 
(6.) Plecotina. Nostrils with a short lunate groove behind 
them; the forehead with a bald longitudinal line. 
16. Barpastexius. Ears large, broad, quadrate, folded down 
on the forehead ; bald space on forehead broad. 
17. Precorus. Ears very large, elongate; tragus very long, 
bald frontal streak linear. 
Upper cutting-teeth 2.2; grinders 2.3. Plecotus. 
Upper cutting-teeth 2.2; grinders #.4. Histiotus. 
Upper cutting-teeth 1.1; grinders +. #4. Otonycteris. 
(7.) Nyctophilina. Nostrils in front of lunate grooves united 
together behind by a membranaceous crest extending across the 
forehead ; forehead with a bare, central, longitudinal furrow with 
inflexed edges. 
18. NycropHiLvs. 
Artrozous of Allen seems to be nearly allied to this genus. 
(8.) Nyctericina. Nostrils in front of a groove; forehead 
with a large, deep, naked groove, covered over with the subspiral 
edges of its sides ; tail-end forked. 
19. Nycreris. Ears united in front on the forehead. 
20. Prratia. Lars close, not united. 
Il. Tail short, enclosed in the base of the large interfemoral mem- 
brane, with the tip on the upper surface. 
(9.) Furipterina. Face short, broad; forehead very convex ; 
