48 MAMMALIA. 
** Nose conical, tapering. Horns black. 
2, PanrHotops. Horns elongate, compressed, sublyrate. Nose 
of male with a dilatation on each side; nose-hole large. 
3. Procapra. Horns moderate, lyrate. Females hornless. Cru- 
men none. Nose-hole large. 
4. GazeLua. Horns moderate, lyrate. Females horned. Cru- 
men distinct. 
5. Tracoprs. Horns moderate, lyrate. Females horned. Cru- 
men none. Back simple. 
6. AnTrporcAs. Horns moderate, lyrate. Females horned. 
Crumen small. Back with expansile white streak. 
7. Mpyceros. Horns elongate, wide, spreading, lyrate. Pas- 
tern with tuft of black hair, 
8. ANTILOPE. Horns elongate, erect, subspiral. Crumen large. 
b. Horns small, slender, straight, conical. 
+ Crumen large. Muffie generally large. 
9. Terracerus. Horns 2 pair. Muffle large. Crumen lon- 
gitudinal. Females hornless. : 
10. CauLorracus. Horns 2, subulate. Muffle large. Crumen 
arched. Hoofs triangular; knees not tufted. 
11. ScopopHorus. Horns 2, subulate. Muffle large. Crumen ~ 
transverse. Knees largely tufted. 
12. Orrorracus. Horns 2, subulate. Muffle large. Crumen 
transverse. Hoofs square, high, contracted. 
13. Nesorracus. Horns 2, subulate. Muffle large. Crumen 
large. Tail very short. 
+t Crumen large. Nose ovine. Muffie none. 
14. Neotrracus. Crown crested. 
+++ Crumen a glandular line on side of face. Muffle large. 
15. CeEPHALOPHUS. Crown crested. 
+ttt Crumen none. Mufile large. Crown not crested. — 
16. Nanorracus. Horns very short, erect. Nose tapering. 
