133 
Tzeiran, Buffon, H. N. xii. t. 31. f. 6, horn.— Aigocerus Equinus and 
A. leucophceus, Gray, Knows. Men. 16. 
Inhabits S. Africa. Brit. Mus. W. Africa; Gambia (Whitfield). 
Horns. Brit. Mus. 
VarA Smaller. “Fur glaucous grey; tuft before the eye short, 
brown; nuchal crest none; hoofs small.”— Sundevall. 
Antilope leucophceus , Pallas; H. Smith, G. A. K. v. t. 1/9.— 
Aigocerus leucophceus , Gray, Knows. Menag. 16. 
Inhabits the Cape of Good Hope ; now extinct. Mus. Stockholm, 
Mus. Upsal and Mus. Paris. 
The head of the female covered with the skin from Macarthy’s 
Island, on the coast of Gambia, which Mr. Whitfield brought home, 
did not appear to differ from the specimen from the Cape in the 
British Museum. The species does not appear to be uncommon in 
the locality, for Mr. Whitfield brought over several pairs of horns. 
He states the flesh is very good venison. “ It is called Dacoi or 
White Mouth by the Mandingoes, Kob and Koba by the Joliffs, 
and Vache brune by the French at Senegal.” This is certainly not 
the Kob of Buffon (xii. t. 32. f. 1, 2). The negroes at the Gambia 
declare that this animal never bears more than one fawn; for after 
that period, the horns increase in length, and enter the loins and 
destroy the animals! 
Buffon (xii. 271. t. 31. f. 6) figures the horn of this species, which 
had been made into a powder-flask, under the name of Tzeiran. 
A. barbata of Daniels appears to be only a bad drawing of this 
species. 
The variety is the size of the Common Stag, Cervus Elaphus. 
M. Sundevall observes that it is as different from A. Equina, as the 
species of Eleotragi and Tragelaphi are from one another; and he 
observes, in a letter I have just received, “ I must tell you, that after 
the inspection of a whole series of A. Equina, w T hich Wahlberg brought 
home, I am convinced that the A. leucophcea of Pallas is a very distinct 
race. Our stuffed specimen, that must have been adult, has much 
smaller hoofs than the very young A. Equina, male as w T ell as female, 
amongst Wahlberg’s, and in the tuft over the lachrymal sinus, as I 
have shortly expressed in the printed survey.” 
When I examined the specimen at Paris I regarded it as a young 
or rather dwarf specimen of A. Equina, and the absence of the nuchal 
crest led to this belief; and I am not satisfied that the number of 
rings on the horns are a sufficient proof of its being adult. 
2. Aigocerus niger. The Black Bok. 
Black; female and young brown; face white, with a dark streak. 
Antilope niger and A. Harrisii, Harris, Wild African Anim. t. 23.—- 
Aigocerus niger, Gray, Know r s. Menag. 17. 
Inhabits S. Africa. Brit. Mus. Males and female and young. 
21. Oryx, Blainv., H. Smith. 
Horns elongate, subulate, ringed at the base, straight, or slightly 
arched, placed in a line with the face ; neck maned above and below r ; 
