VERTEBRATA, 
357 
Tig. 352.—White-throated Sapajou ( Cebus hypolencus). Central America. 
bellum. 184 While in the Monkeys the skull is rounded 
and smooth, that of the Apes, especially those coming 
nearest to Man—the anthropoid, or long-armed, Apes, as 
Gorilla, Chimpanzee, Orang, and Gibbon—is characterized 
by strong crests. Monkeys take a horizontal position; 
but the Apes assume a semi- 
erect attitude, the legs being 
shorter than the arms. In 
Fro, 353.—Skull of Orang-utan (Simia Fig. 354 .—Skull of Chimpanzee ( Troglo • 
satyr us). dytes Niger). 
