MAMMALIA 



379 



brain is comparatively unspecialized, the cerebral hemispheres being 

 so small as not to cover the hind-brain. The second finger retains 





Fig. 194. — Group of Primates. A, Smith's Dwarf Lemur, Miaocebv^ smithii; 

 B. Spider Monkey, Ateles aier; C, Drill or Mandrill, Papio leucophmus; D, Gib- 

 bon, Hylobates lar; E and F, Chimpanzee, Pan pygmavs. (Redrawn, A and B, 

 after Beddard; rest after Lydekker.) 



the ancestral claw, but the rest of the fingers have "nails." The 

 lemurs have their headquarters in Madagascar, but are also found 

 in small numbers in the tropical forests of Africa and in Malaysia. 



