MAN AND APES. 49 



All the Baboons have thumbs and cheek- 

 pouches, and their ischial callosities are very 

 large and conspicuous, being sometimes bril- 

 liantly coloured. 



The second family of apes, the Cebidce, or 

 monkeys of the New World, form a very 

 distinct group from the Simiadce, and a little 

 experience readily enables an observer to pro- 

 nounce at a glance that a given ape belongs 

 to the New World without waiting to ex- 

 amine its distinctive characters. They range 

 throughout the Continent of Tropical America, 

 though their headquarters are the forests of 

 Brazil. Strange to say they are absent from 

 the West Indian islands. 



All the Cebidce are devoid of ischial cal- 

 losities and cheek pouches. None have the 

 prominent muzzles of the African baboons, 

 and none attain to so great a bulk as do these 

 latter. 



More generally (and for the most part 

 almost exclusively) arboreal than are the apes 

 of the New World, many of the Cebidce are 



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