344 COMPARATIVE ZOOLOGY. 
Apes, as Gorilla, Chimpanzee, Orang, and Gibbon —is 
characterized by strong crests. Lemurs and Monkeys 
take a horizontal position ; 
but the Apes assume a semi- 
erect attitude, the legs being 
\ ae: as Mm th 
y poe 
Fig. 343.—Skull of Orang-utan (Simia Fig. 344.—Skull of Chimpanzee (Troglo- 
satyrus). dytes niger). 
shorter than the arms. In all the Primates but Man, the 
-body is clothed with hair, which is generally longest on 
the back. Several Monkeys and Apes have a beard, as 
the Howler and Orang. 
Fig. 345.—Female Orang-utan (from photograph). Borneo. 
