RUMINANTIA : CAVICORNIA. 



59 



Pronghorn Antelope, A . americana, Ord. 



The Prong-horn Ante- Fi * 47 ' 



lope or Cabree, A. ameri- 

 cana, Ord, of the plains 

 west of the Missouri Riv- 

 er, from the Lower Rio 

 Grande to the Saskatcha- 

 wan, and westward to the 

 Cascade and Coast Range 

 of the Pacific slope, ex- 

 ceeds in size the domestic 

 sheep, and has longer legs 

 and a longer and more 

 erect neck. The hair is 

 very coarse and thick ; 

 the color above yellowish- 

 brown, the entire under parts and a square patch on the 

 rump white ; the horns, hoofs, and naked parts of the 

 nose black. About half-way up the horns on their an- 

 terior face there is a branch or prong, from which the 

 animal gets its popular name. 



The Genus Aplocerus is characterized by horns which 



are small, conical, nearly 



erect, slightly inclined, 



recurved at the tip, and 



ringed at the base. 

 The Mountain Goat, A. 



montamis, Rich., of the 



Rocky Mountains, is an 



antelope. Its jet-black, 



polished, slender, and 



conical horns are much 



like those of the chamois. 



It is covered with long 



and pendent hair, and the 



Color is White. Mountain Goat, A. montanus, Rich. 



Fig. 48- 



