314 PRACTICAL LESSONS IN SCIENCE. 



The Prosimise or the Lemurs. These animals have hand& and 

 prehensile feet; live in trees and feed on insects and small animals, 

 and are generally nocturnal in their habits. 



The Primates or Apes. The apes are vegetarians, generally 

 leading an arboreal life, for which their form, however varied, 

 seems adapted. They are usually of slender build, having hands, 

 prehensile feet and sometimes prehensile tails. 



The jaws are much less prominent than with other animals, 

 which, with the obtuse ear and projecting eyebrow gives the face 

 something of a human appearance. They have two mammary 

 glands situated in the pectoral region, and are covered with a 

 complete coat of hair. The dentition is much like the human, 

 only that the canines are relatively larger and the grinders more 

 tuberculated. The clavicle is always present, and in general the 

 structure is very like the human, differing most widely in the size 

 and structure of the brain and cranium. 



The Hapalidse are South American monkeys of small size with 

 long hairy, non-prehensile tails, and opposable great toes. The 

 Pithecidse have more teeth than the last but are otherwise much 

 the same. 



The Cebidss are South American monkeys with prehensile tails 

 sometimes naked at the end. 



The Cynocephalidse or Baboons. The baboons are of stout 

 build, semiterrestrial in their habits, with a dog-like face. Tail 

 sometimes long, sometimes short, never prehensile. The anterior 

 and posterior limbs sub-equal. The canine teeth are large and 

 the disposition is fierce. They sometimes eat eggs and small 

 birds; in captivity they are omnivorous. There a re several species, 

 but they are all inhabitants of Africa and Arabia. 



The Cercopithecidse are of slender build, having a long tail, 

 with cheek pouches and a short muzzle. They are the common 

 apes of North Africa, Gibraltar, India, and adjacent islands. 



The Semnopithecidse have longer pelvic limbs, no cheek pouches, 

 thumb small, sometimes absent. They are mainly Asiatic. 



The Anthropomorphss have longer anterior limbs and without 

 tail or cheek pouches. In this family are the gibbons, having 



