ORDER OE QUADRUMANA. 
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 Bufibn’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 
Fig. 24.. — Common Marmoset ( Jacchus vuJgnris). 
having the head covered with long hair, similar to a mane — the 
Marakina Ouistiti, the Chrvsomelous 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 
