136 MAMMALIA. 



upper part of the fore-leg, and the dorsal streak, dark black. The 

 belly, the front and back edge of the upper part of the legs, and 

 under side of tail, whitish. A broad half-collar in front of the 



shoulder, narrowed above. Fourteen or fifteen narrow, waved, 

 perpendicular streaks on each side of the body white. Withers 

 with intermixed black hairs. Throat of female dark brown ; 

 crown reddish brown. 



Boselaphus Derbianus, Gray, Ann. fy Mag. N. Hist. xx. 286 ; 



Silliman, Amer. Journ. v. 279. 



Oreas Derbianus, Gray, Knowsley Menag. t. 3 and 9 . 

 Hab. Western Africa ; River Cassaman. 



Horns. Gambia. Presented by the Earl of Derby. 

 Horns. Gambia. 



B. Horns subangular, obscurely keeled. Nose bovine. Muffle 

 rather large, bald between and beneath the nostrils, and on a 

 narrow band up the middle of the hairy upper lip. Neck 

 with longer hair, forming a mane. Body high. Legs slender. 

 Hoofs and false hoofs small. 



3. TRAGELAPHUS. 



Horns conical, tapering, with only one spiral turn, subangular, 

 very obscurely angular in front at the base, with a keel above 

 arising from the hinder part of the base. Tear-bag distinct. 

 Neck and throat with longer hair. Nape and back with a more 

 or less distinct mane. Legs slender. Hoofs and false hoofs 

 small. Females hornless. Skull, t. 18. f. 1, 2. 



Antilope (Tragelaphus), sp., A. Smith, Griffith A. K. v. 182; 



Lesson, N. Tab. R. A. 181. 



Tragelaphus, Gray, Ann. fy Mag. N. H. 1846, 230. 

 Calliope, Ogilby, Proc. Z. Soc. 1836; Ruppell, Verz. Senck. 



Samml. 1845, not of Swainson. 



a. Horns large, elongate. Face with an arched band between the 

 eyes. Back cross-banded. Euryceros. 



Strepsiceros, sp., Ogilby. 

 Euryceros, Gray, Knowsley Menag. 



1. TRAGELAPHUS EURYCERUS. The BROAD-HORNED ANTE- 

 LOPE. 



Head pale brown. Broad band before the eyes, and two large 

 spots on cheeks, chin, and front of upper lip, white. Horns 



