THE SPIDER-MONKEYS. 241 



served in his collections at Paris an arm and hand, which had 

 been boiled over the fire at Esmeraldas ; and no smell arises 

 from them after a great number of years." 



VI. THE BLACK-FACED SPIDER-MONKEY. ATELES ATER. 



Ateles nter (Le Caijou), F. Cuvier, Mamm., i., pi. xxxix. 

 (1823); Sclater, P. Z. S., 1872, p. 5; Gray, Cat. Mon- 

 keys Brit. Mus., p. 42 (1870) ; Schl., Mus. Pays Bas, vii., 

 p. 170 (1876). 



Sapajou ater, Slack, Proc. Ac. Nat. Sci. Philad., 1862, p. 510 



Characters. Entirely black; fur silky, and longer on the head 

 and tail than on the body ; fur on top of head directed from 

 behind forwards, falling over the forehead, meeting the back- 

 wardly directed hairs of the forehead and forming a tuft. Face 

 black, the upper part naked ; chin with stiff black hairs mixed 

 with a few white ones. Ears oval and human-like in form, the 

 upper part movable at will. Thumbs entirely wanting. Length 

 of body, 19 inches; tail, 26 inches. 



Distinguished from A. paniscus, which it closely resembles, 

 by the black colour of its face, and the direction of the hairs 

 on the forehead. 



Young. Lighter in colour than the adults; sometimes brown 

 on the back and the outer side of the limbs. 



Distribution. The Black-Faced Spider-Monkey ranges from 

 Panama, through the United States of Colombia to Eastern 

 Peru. 



Habits. Entirely arboreal, living in large troops, and feeding 

 on fruits. 



3 v. i R 



