MAMMALIA, 83 
Adult, stuffed. West Africa. Gambia. Presented by the Earl 
of Derby. 
Female, adult. 
Young: brighter coloured; streak on nape more distinct ; tip 
of tail black. 
OsTEOLocy. 
Skull, adult male. West Africa. Presented by the Earl of 
Derby. 
Skull, young male. Gambia. Presented by the Earl of Derby. 
Two skulls, young. Gambia. Presented by the Earl of Derby. 
**** Knees not tufted. Ears moderate, rounded. Horns conical, 
thick, without any streak over the eye. | 
7. CEPHALOPHUS SYLVICULTRIX. The WHITE-BACKED 
Busy Buck. 
Blackish brown, minutely grey grisled. Hair brown, with 
whitish tips. Back with a large yellowish white spot, narrow m 
front. Throat, chest and belly redder. Crown, nape and legs 
darker. Horns 2 Varies in the size of the dorsal spots. 
Antilope sylvicultrix, Afzel. Nov. Act. Upsal. vii. 265. t. 8, 1811. 
A. Lai ae sylvicultrix, Desm. Mam. 462; Fischer, Syn. 467. 
4. 
A. Cephalophus sylvicultrix, H. Smith, Griffith A. K. iv. 258. 
t. 187, v. 846. 
Cephalophorus sylvicultrix, Gray, Ann. & Mag. N. H. 1846, 165. 
Cephalophus sylvicultrix, Knowsley Menag. 10. t. 23. f. 3, t. 8. 
f. 1; Proc. Zool. Soe. 1850, 120. 
Sylvicapra sylvicultrix, Sundevall, Pecora, 67. 
Bush Goat, Colonists, Sierra Leone. 
Hab. Sierra Leone, in swampy places. 
A young male. Sierra Leone. Presented by the Earl of Derby. 
8. CEPHALOPHUS OGILBII. The BLACK-STRIPED BusH Buck. 
Pale bay brown, with a deep black dorsal streak, beneath pale. 
Crown and haunches brighter bay. Neck, withers and side of 
the dorsal line varied with deep brown hairs. Streak up the 
fore-legs, upper part of hock, feet above the hoofs, and end of 
tail, black. Horns short, thick, conical, very rugose on the inner 
front edge of the base. 
Antilope Ogilbii, Waterhouse, Proc. Z. S. 1838, 60; 1842, 129. 
Cephalophorus Ogilbyi, Gray, List Mamm. B. M. 163. 
Cephalophus Ogilbu, Gray, Ann. § Mag. N. H. 1842, x. 267 ; 
