56 



V ERTEBRATA. 



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S WmS0 





buazilian forest: tiik moxkkys at iiom.j 



the canines of the upper jaw, and between the canines and the molars of the lower, for the 

 reception and lodgmcnl of those organs when the mouth is closed. The nails of all their fingers, 

 bi well ;i- those of the thumbs, are invariably flat and expanded. 



In air ry other point, tins are subject to infinite variations of form and structure The 



shape of the bead, v. huh in one Or two Bpecies offers a close approximation to the human form, 



through numerous intermediate gradations, until it reaches a point at which it can only be 



compared with that of the hound. The body, winch is in general slight and well-made, is in some 



