216 Zoological Society. 



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, which Wahlberg brought 

 home, I am convinced that the A. leucopkcea 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 well 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, Knows. Menag. 1 7. 



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 ; 

 tear-bag none ; nose subcervine, with a marginal muffle ; hoofs nar- 

 rowed in front, false hoofs large ; teats four (two, Harris) . In the 

 skull there is a slight suborbital fissure, but no pit, and the grinders 

 have supplementary lobes. 



* Horns straight. 



1. Oryx Gazella. The Kookaam or Gemsboc. 



Horns straight, shelving backwards ; throat with a bunch of black 

 hairs ; black streak on the face, conjoined under the chin ; rump, 

 face, spinal line, lateral streak, and very broad band on the thigh and 

 cubitus black in summer. Young pale brown ; hairs blackish at the 

 base. 



Capra Gazella, Linn. — Antilope Oryx, Pallas ; H. Smith. — A. be- 

 zoartica, Pallas. — A. recticornis, Erxl. ; Pallas, Nov. Comm. Petrop. 

 xiii. t. 10. f. 6. — Oryx Capensis, Ogilby ; Harris, W. A. A. t. 9. — 

 O. Gazella, Gray, Knows. Menag. 17. t. 16. f. 2, young. 



Inhabits S. Africa ; Cape of Good Hope. Brit. Mus. Adult and 

 young. 



2. Oryx Beisa. The Beisa. 



Horns straight ; throat without any bunch of hairs ; black face- 

 streaks separate. " Pale ; face, belly and limbs white ; front of face, 

 two streaks on cheek, narrow line along throat, dorsal streak, streak 

 on each side of abdomen, band round upper part, and streak in front 

 of lower part of fore-leg and end of tail black." 



Antilope Beisa, Riippell, Atlas, t. 5.— Oryx Beisa, Sundevall. — 

 A. Dammah, Riippell. 



Inhabits Abyssinia. Mus. Frankfort. 



