TIIE 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 ater (Le Caijou), F. Cuvier, Mamm., i., pl. xxxix. 
(moe3) > selater, P. Z.S., 1872, p. 53> 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. 
a=-=V. 1 R 
