628 UNGULATA. 



sued, trusts to its speed, seeking no shelter either in the bush or the 

 forest. Its general habitation is among the long grass which remains 

 after a plain has been burned, or on the sheltered side of a hill, among 

 rocks and stones." 



Its mode of progression, wiien alarmed or disturbed, is very beau- 

 tiful. It gallops away with great rapidity for a few yards, and then 

 bounds several feet in the air, gallops on, and bounds again. These 

 leaps are made for the purpose of examining the surrounding country, 

 which it is enabled to do from its elevated position in the air. Some- 

 times, and especially when any suspicious object is onl\' indistinctly 

 observed in the first bound, the Ourebi will make several successive 

 leaps, and it then looks almost like a creature possessed of wings, and 

 having the power of sustaining itself in the air. If for instance, a dog 

 pursues one of these antelopes, and follows it through long grass, the 

 Ourebi will make repeated leaps, and b}' observing the direction in 

 which its pursuer is advancing, will suddenly change its own course, and 

 thus escape from view. In descending from these leaps the Ourebi 

 comes to the ground on its hind feet. 



The Ourebi stands about two feet high, and is four feet in length. 

 The horns of the males are about five inches long, straight, pointed, and 

 ringed at the base. The female is hornless. The color of the animal is 

 pale-tawny above, white below. 



The Klippspringer, Ccrvkapra saltatrix, is called bv Gordon Gum- 

 ming a darling little antelope. It is peculiarly formed for rocky ground, 

 its hoofs being small, hard, and sharply pointed. It stands like the 

 chamois, with its feet drawn close together. When alarmed, it bounds 

 up the most precipitous rocks with such rapidity that it is soon bevond 

 all danger. Its color is dark brown, sj^rinkled with yellow. Eacli hair 

 is yellow at tlie tip, then lirown, tlien gray to tiie base. It measures 

 about twenty-one inches in height when fully grown. The female is 

 like the female Ourebi, destitute of horns. 



GENUS KOBUS. 



The Water Buck, Kobns cllipsflprymnns, is the most striking of the 

 six species of this genus. 



It is a peculiarly timid animal, and when alarmed rushes at once 

 toward tiie nearest river, into which, it jilunges without hesitation, and 



