xxiv. 3 PRIMATE HANDS AND FEET 631 



has very long arms. The chimpanzees {Pan) and gorillas (Gorilla), 

 living in the forests of tropical Africa, are so alike that it is doubtful 



Fores t 

 Gonlla 



Mountain 

 Gorilla 



Fig. 410. Manus and pes of a series of Primates. 

 Ml. manus; p. pes. (After Le Gros Clark, Morton & Fuller.) 



if the generic separation is justified. The chimpanzee is the smaller 

 and less muscular animal, lacking, for example, the large parietal and 

 occipital crests found in the male gorilla. There is a corresponding 

 difference of temperament, the chimpanzee being lively and sometimes 

 tameable, the gorilla gloomy, ferocious, and unafraid. Gorillas are 



