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SYSTEMATIC ZOOLOGY 



humped dromedary and the two-humped camel. The latter is 

 a native of Central Asia and larger than the dromedary ; the 

 humps are largely fatty masses, which serve as a reserve food 

 supply. Some years ago camels were imported into the United 

 States for use on our Western deserts, and are now quite abun- 

 dant in New Mexico, Arizona, and Nevada. The only native 



specimen from Alaska. (From .1 photograph 



ided by the American Museum 01 Natural History.) 



.American representatives of this family consist of four species of 

 the genus Auchenia, living in western South America, of which 

 the most familiar are the llama and the alpaca. 



The remaining ruminants are generally provided with antlers 

 or with horns ; the former are true bony structures, covered at 

 first with the soft, hairy skin, called popularly the "velvet." 



