MONKEYS. 195 



young sprouts, roots, etc., to which they sometimes add 

 shell-fish, insects, little reptiles, and birds' eggs. 



Monkeys are classified in three groups: the anthro- 

 poid apes, tailless, semierect, and long-armed ; the catar- 

 rhini, dog-nosed monkeys of the Eastern Continent ; and 

 the platyrrhini, flat-nosed monkeys of South and Cen- 

 tral America. 



Monkeys live principally in the torrid zone ; those of 

 the old continent and those of the new present great 

 differences, corresponding to the difference in habitation. 

 The Eastern monkeys all have twenty molar teeth, the 

 dental formula being pf mf ; many have no tails, and 

 none have prehensile tails ; the ischial prominences are 

 naked, and have ischial callosities, usually red in color ; 

 many have pouches in the 

 cheeks opening into the 

 mouth, and in these they 

 can carry a store of provi- 

 sions. Among these mon- 

 keys of the Old World are 

 found the largest, and those 

 most closely allied to man ; 

 of the anthropoid apes the 

 more important are the 

 chimpanzee, the gorilla, 



Hand (a) and foot (6) of gorilla. 



and the orang-outang ; the 



gibbon and the magot relate them to the lower va- 

 rieties. 



The chimpanzee and the gorilla inhabit the immense 

 swampy woods of Africa, and travellers have brought us 

 many interesting stories of their habits and of their 

 marvellous strength. The orang-outang and the gibbon 

 inhabit the forests of India and the Indian Archipelago. 



