56 
VERTEBKATA. 
BHAZXLIAN rOKKST : THE MONKKYS AT HOJIJI 
and tlie canines of the upper jaw, and between the canines and tlie molars of the lower, for the 
reception and lodgment of those organs when the mouth is closed. The nails of all their fingers, 
as well as those of the thumbs, are invariably flat and expanded. 
In almost every other point, they are subject to hifinite vainations of form and structure. The 
shape of the head, which in one or two species offers a close approximation to tbc human form, 
passes through numerous intermediate gradations, until it reaches a point at which it can only be 
tsouipared with that of the hound. The body, which is in general slight and well-made, is in some 
