THE MARMOSETS. 131 



Tamarins (Midas). They are most numerous in the equatorial 

 forests of South America. 



THE MARMOSETS. GENUS HAPALE. 

 Hapale, Illiger, Prodr. Syst. Mamm., p. 71 (1811). 



The members of this genus, which are often kept in captivity 

 as pets, are very small animals, covered with thick and silky 

 fur, and having bushy tails, equal to or even exceeding the 

 length of their body. The head is round, the eyes large and 

 watchful, the face short and nude, and often abundantly 

 whiskered. The mouth is large ; the ears also large and often 

 fringed, and the neck sometimes clothed, with long hair. 

 They are distinguished from the Tamarins (Midas) by having 

 their upper incisor teeth long, narrow, and protruding outwards 

 and forwards ; the incisors of the lower jaw are also very long, 

 and its canines small and shorter than the incisors, both being 

 protrusive, as among the Lemurs. The cranial region of the 

 smooth skull is conspicuously large in comparison with its 

 facial portion, but the cerebrum shows a low type of organisa- 

 tion, and indicates a small degree of intelligence in its posses- 

 sor ; it is smooth and almost devoid of convolutions ; the 

 cerebrum, too, unlike that of the Lemuroidea, completely covers 

 the cerebellum. The orbits are large, and almost completely 

 walled in from the temporal depression behind. The stomach 

 in form resembles that found in the higher groups, but its 

 orifices for the entrance and exit of food are nearer to each 

 other than in any of the other American Monkeys. 



The female produces two or three young at a birth, instead 

 of one, as is the general rule among the Anthropoidea. The 

 species vary much in coloration, and some of them resemble 

 the Lemurs in being ring-tailed. 



