244 CLASS MAMMALIA. 



The Orebi. (A. Scoparia.) The last which we place in 

 this group is the Orebi, one of those anomalous species 

 which retains a Reduncine character in the horns, and the 

 four mammae in the females, but departs from them by 

 having the suborbital sinus developed, as in the next, and, 

 besides, resumes a character belonging to true antelopes in 

 the brushes on the knees. The adult male is about four 

 feet in length from nose to tail, and is equal in stature to 

 the Roebuck, or twenty-two and twenty-four inches in 

 height. The head is five inches long from the nose to the 

 horns, and eight inches from the nose to the ears ; the 

 horns are nearly vertical, slightly bent forwards, black, 

 round, five inches long, with six or seven wrinkles at base, 

 and then five annuli reaching half way up, the rest smooth 

 and pointed ; they stand close above the orbits, one inch 

 and a half asunder at base, and three inches and a half at 

 the tips ; the head is round, with a prolonged snout ; the 

 chaffron rather convex, and the nose terminated by a small 

 muzzle : under the inner canthus of the eye is a well 

 defined lachrymary opening ; the incisors are small, over- 

 lapping, the external edges being oblique and prolonged ; 

 the ears are long, rather pointed, white, and villous inside ; 

 the neck slender, and the knees tufted in both sexes : com- 

 pared with the length of the animal, the legs are high ; the 

 face and back are tawny in some, and paler-fulvous in 

 others, this colour extending over the back of the ears, 

 shoulders, flanks, anterior and external side of the fore- 

 legs, down the croup, thighs, and hind-legs ; above the eye 

 there is in most specimens an arched white streak, and that 

 colour surrounds the mouth and nostrils, passes along the 

 under jaw, the breast, belly, and inside of the thighs ; on 

 the throat and breast the white hair is long, soft, and pen- 

 dent ; the tail is short, hairy, and blackish ; the skin is 

 black and naked in the groin of the pale coloured specimens, 

 and the mammae, four in number, are likewise black, but 



