72 
Elementary Manual of Zoology. 
their short rounded heads and highly specialised 
canine and carnassial teeth. They never have 
more than three premolars followed by one molar 
above. The claws are completely retractile and 
“the muscular system is extraordinarily developed. 
1X.—Primates.—These mammals may most easily be distinguished 
by the fact that they have the eyes enclosed in distinct 
sockets. They are divided into the Lemurotdea, with eye- 
sockets open behind, and the Anthropoidea, with eye-sockets 
closed behind. The JLemurozdea include the lemurs, 
which are of no practical importance to the forester. The 
Anthropoidea include all the monkeys and man. The 
chief families of monkeys to be found in India are— 
(1) the Cercopithecida, in which a tail is almost always 
present and which include the common Jangurs 
and macacus monkeys ; 
(2) the Scmede, in which no tail is developed, and 
which include the howling hoolock (gibbon) mon- 
keys of the jungles of Assam and Burma. 
