QUADRUMA^A : PLATYRHINE MONKEYS. 



77 



FIG. 75. 



Skull of Baboon. 

 Cynocephalus. 



which are the ugliest and most ferocious of all the monkey 

 tribes. They have the muzzle 

 much lengthened and are often 

 called Dog - headed monkeys, 

 and Mandrills. They belong 

 mainly to Africa and the Phi- 

 lippine Islands. 



All of the Quadrumaua which 

 inhabit America are called the 

 PLATYRIIINE monkeys, so named from the Greek plains, 

 broad, and rhin, nose ; they have the nose with the median 

 septum broad the nostrils wide apart. These monkeys, as 

 a group, are smaller and less ferocious than the Catarrhines, 

 and as a whole are regarded as inferior to them. Except- 

 ing the little monkeys called Marmosets (Fig. 77), which 

 have only thirty-two, the Platyrhines have thirty-six teeth. 

 And in many species the tail is prehensile a characteris- 

 tic not found in any catarrhine monkey. 



The prehensile tail of these monkeys is capable of being 



FIG. 76. 



FIG. 77. 



Spider Monkey, Ateles behebuth, 

 Brisson. 



Marmoset, Hapale chrysomelas, 

 Prince Maximilian. 



twisted firmly around branches of trees, and some species 

 are thus able to sustain the entire weight of the body. 



