MAMMALS. 



391 



The marmosets are small squirrel-like forms found in 

 South America. They are provided with claws on all 

 digits except the great toe, and the tail is incapable of 

 grasping, while the thumb is scarcely capable of being 

 opposed to the fingers. 



The remaining American monkeys the howlers, sapa- 

 jous, spider-monkeys, and the like have a broad septum 



FIG. 174. Chimpanzee (Troglodytes niger"). After Brehm. 



of the nose, causing the nostrils to be wide apart; the 

 thumb is scarcely opposable, and in some is lacking ; while 

 the teeth differ from those of the Old World monkeys, 

 and of man, in having praj. Many have a prehensile tail. 

 The Old World monkeys have the nostrils closer together, 

 the thumb as well as the great toe is opposable, and the 

 tail never takes the place of a fifth hand. In their teeth 

 they resemble man: if, c\, praf, raj. The baboons, 

 distributed across Asia and Africa, have large cheek 



