98 THE FAUNA OF 
cheek-pouches, to be chewed and swallowed later. This 
arrangement is far from universal—it is absent in all 
the New World monkeys and in some Old World 
forms, but it is nevertheless common. 
As, with the exception of baboons, and of the Tibetan 
and Himalayan forms already mentioned, all Primates 
are denizens of the tropical forest, it is impossible to 
name all the members of the order here—a few ex- 
amples only can be picked out. 
Apart from man, the highest living forms are the 
anthropoid apes, of which there are four living kinds— 
the gorilla and chimpanzee from West Africa, the orang 
in Sumatra and Borneo, the gibbons from South-East 
Asia. Like man himself, and like most Primates except 
the lemurs, the anthropoid apes are diurnal in habit, 
not nocturnal, ike many mammals. The gorilla and 
chimpanzee resemble man in the region which they 
* inhabit in having dark skins and hair ; the body is of 
course much more hairy than in man. The gorilla, 
which has a very limited distribution, is a dweller in 
dense forest regions, and is an extraordinarily powerful 
animal. It is purely vegetarian and fruit-eating, shar- 
ing a taste for some fruits with the negroes of the 
region, and also consuming some which the negroes do 
not care for. The fact that it robs human plantations 
shows that food is sometimes scarce, even though the 
animals appear to be very few in number. Wild plan- 
tains and ‘ palm cabbage ’ are freely eaten. 
The chimpanzee, which extends into Central Equa- 
torial Africa apparently, at least at times, eats some 
animal food in addition to fruit. 
Very different in appearance from the gorilla and 
chimpanzee is the orang, with its very long arms and 
its covering of long reddish hair. The way in which 
