OEDEE OF QUADEUMANA. 



553 



These are first six species, provided with tufts of white or 

 black hair at the two sides of the head — the Common Ouistiti 

 (Marmoset), or BufFon's Ouistiti (Fig. 244) ; the Eared Ouistiti, 

 the Capuchin Ouistiti, the White-necked Ouistiti, the White- 

 headed Ouistiti, and the Black-tufted Ouistiti. Then three species 



Fij^. '2-Il . . — Oummon Marmoset {Jacc/t us vufgniHs). 



having the head covered with long hair, similar to a mane — the 

 Marakina Ouistiti, the Chrj'somelous Ouistiti, and the Leoncito 

 Ouistiti. 



The Plumed Ouistiti is recognisable by a narrow band of hair 

 raised on its forehead in the form of a plume. The other species 

 have the hair of the head quite close and short. 



Family of Monkeys. — With the Monkeys, we begin the study 

 of higher Quadrumana — those which have various points of 

 resemblance to Man in their conformation. We have already 

 mentioned, in speaking of the general features of this Order, the 

 principal characteristics in which Monkeys approach the human 

 species. We now complete these features by saying that their 

 dental system consists of thirty-two or thirty-six teeth, that their 



