194 CLASS MAMMALIA. 



his Ledmee, and may, therefore, be suspected to have mis- 

 taken this animal for the true Antelope, although it must 

 be owned that their length of two feet is no objection, and 

 that there are grounded reasons to doubt the exclusion 

 of that species from Africa. In the zoological part of 

 Messrs. Denham and Clapperton's Voyage, the Addax is 

 clearly mistaken for A. Cervicapra, for the Arab name El 

 Buger Abiad, or White Cow, at once reveals it. 



The Addax differs from the true Oryges by having the 

 croup somewhat more elevated than the shoulders, and by 

 a lengthened mane on the neck, and a tuft of hair beneath 

 the throat. Its stature is about three feet seven inches at 

 the shoulder, and three feet eight inches at the loins : the 

 horns are equally robust in both sexes, black, round, diver- 

 gent, slender, with thirty-two or thirty-five annuli, some of 

 the lower dichotomous, extending upwards three-fourths of 

 the length ; they form two and a half spiral turns, with an 

 obsolete groove on the internal side, obliterated midway 

 towards the point, which, with about five inches of sur- 

 face, is smooth, sharp, and turned outwards : they stand 

 close at the base, near the summit of the frontals, on the 

 same plane with the face, five inches in circumference at 

 the root, two feet four inches long, in a straight line, and 

 nearly the same distance between the tips ; the eyes are 

 prominent, and without a lachrymary sinus ; there is a 

 dark-coloured mane on the neck, hanging in various direc- 

 tions, and a heavy, coarse, and long tuft of black hair upon 

 the larynx ; the head is thick, the forehead flat, covered 

 with frizzled black hair, surrounded by a narrow white 

 line, descending from above the eyes, and meeting on the 

 chaffron, then passing obliquely before the inner canthus 

 of the eyes to near the mouth ; the nose is ovine, and, with 

 the lips and chin, white ; the ears long, hairy, and of the 

 same colour ; the region about the orbits, the chaffron, 

 cheeks, and neck, are of a deep liver-coloured gray, pass- 



