154 MAMMALIA. RUMINANTIA. 



Sub-Gen. 3. ALCELAPHUS, Blainv Horns with double flexures, 

 cumulated, without ridges, in both sexes ; lachrymal sinuses, but 

 no inguinal pores. 



A. bubalisj Pall. Desm. Head much elongated ; horns black, of 

 medium length, strongly annulated in a spiral form; point directed 

 backwards ; fur fawn-coloured ; tail black at the end. Size of 

 the stag. Inhabits Northern Africa. Buff. xii. pi. 37, 38. 



A. caama, Desm. Schreb. The Hartbeest. Head very long ; horns 

 thick, strongly annulated obliquely to the second bending ; the 

 points much prolonged back wards; fur bay fawn-colour, deeper on 

 the back, with black or brown at the base of the horns, upon the 

 forehead, and the anterior face of the legs. Upwards of six feet 

 long. Southern Africa. Schreb. t. 277- 



Sub-Gen. 4. TRAGELAPHUS, Blainville. Horns more or less com- 

 pressed, spiral, with ridges in both sexes, or in the males only ; 

 lachrymal sinuses sometimes wanting. 



A. strepsiceros, Desm. Horns very long, diverging, describing three 

 elongated spiral turns, smooth, compressed, with two ridges ; a 

 mane on the neck ; fur brownish gray, with a dorsal line, and 

 many transverse white bands on the flanks. Eleven feet long. 

 Interior Africa. Daniell, Afr. Seen. No. 6. 



A. sylvatica, Gmel. Desm. The Boshbock. Horns in the male 

 only, ten inches long, with an obsolete ridge on both sides, spiral 

 and sublyrate, black and closely annulated at base, smooth at 

 the point; fur chestnut above, with white spots on the neck, croup, 

 and thighs. Length 3^ feet. Caifraria. Shaw, ii. pi. 193. 



A. scripta, Pall. Desm. Horns seven inches long, reclining, straight, 

 wavy, with two ridges twisting spirally round the axis ; fur ful- 

 vous bay, with white transverse bands at the flanks, and spots 

 on the thighs. Length 4^ feet. Senegal. Shaw, ii. pi. 186. 



Sub-Gen. 5. OREAS, Desm. Horns straight, with a very strong 

 spiral ridge, in both sexes ; no lachrymal sinuses ; four mammae ; 

 tail long and tufted. 



A. oreas, Desm. Horns black, very thick, diverging, with a strong 

 ridge, describing two spiral turns, towards their base, smooth at 

 the point ; a little mane upon the neck and back ; a dewlap 

 with long hairs, and a projection of the larynx below ; fur gray- 

 ish fawn-coloured. Length eight feet. Pall. Spic. fas. xii. p. 17- 



Sub-Gen. 6. BOSELAPHUS, Blainville. Horns simple, not rugous, 

 variously curved, without spiral ridge. 



A. picta, Pall. Desm. The Nyl-ghau. Horns conical, black, smooth, 

 with .a triangular prolongation at their base ; much separated, bend- 

 ing forwards and upwards ; lachrymal sinuses ; fur gray in the 

 male, fawn-coloured in the female ; a tuft of long dark hair on 

 the throat ; black and white rings on the pasterns ; tail tufted. 

 Inhabits India. Shaw, ii. pi. 189. 



