RUMIXANTIA. 283 



highest development ; and Mr. Rennet's conjecture 

 respecting the sexual relations it may bear, is pro- 

 bably correct ; but we suspect the animals most 

 largely provided with the organs are precisely those 

 which have least perspiration under exertion, and 

 that the superabundant odours thus generated and 

 cast on the winds, serve these delicate scented spe- 

 cies, all with very little voice, to find out each other, 

 and keep together for their common security. 



It may perhaps be advisable to detach from this 

 sub-genus, A. Coins or Saiga, and A. gutturosa ; 

 both having peculiarities of structure in the nostrils 

 and throat, and sub-lyrate horns, in order to place 

 them in the new 



Sub-genus PANTHOLOPS of Hodgson. They may 

 constitute a little group of the temperate and high 

 regions of the Old World, and include A. kemas or 

 Hodgsonii) likewise provided with a peculiar appa- 

 ratus in the nostrils, sub-lyrate horns, and other 

 assimilating characters. 



Sub-genus REDUNCA. Here the recurved horns 

 are generally coincident with a more robust form, 

 longer, coarser fur, dull, or mixed colours, absence of 

 horns in the females, small muzzle, and sub-orbital 

 sinus, &c. 



OREOTBAGUS may form another sub-genus, and is 

 so noticed in Vol. XVIII., page 221, by the name 

 of Saltatrix. 



The sub-genera TRAGULUS,* RAPHICERUS, TETRA- 



* Add to this sub-genus A. montana, RUppel. 



