THE ORDERS OF MAMMALS 



445 



four genera in the family: (i) gibbons, (2) orang-utans, (3) go- 

 rillas, and (4) chimpanzees. 



Fig. 313. — White throated capuchin, a South American monkey. (From 

 Elliott. Courtesy American Museum of Natural History.) 



The gibbons (Fig. 315) are arboreal, have a slender body and 

 limbs, and reach a height of not over three feet. 



