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. Miaocebus smithii; 

 B. Spider Monkey, Aides ater; C, Drill or Mandrill, Papio leucophceus; D, Gib- 

 bon, Hylobates lar; E and F, Chimpanzee, Pan pygmctus. (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. 



