THE SPIDER-MONKEYS. 243 
Distribution—In 1860, when Mr. L. Fraser returned from 
Ecuador, he spoke of a large Monkey he had seen, but had 
not obtained, in the valleys of Western Ecuador. It remained 
unknown until it was shot, and brought to England by Mr. 
Buckley some ten years later. It was the only Monkey, 
he says, except a JAZycetes, which he saw in Trans-Andean 
Ecuador. 
Habits.—These, doubtless, do not differ from those of other 
Spider-Monkeys. 
IX. THE HOODED SPIDER-MONKEY. ATELES CUCULLATUS. 
Aiteles cucullatus, Gray, P. Z.5S., 1865, p. 733; id. Cat. Mon- 
eye. ont Mus, p. 42 (1870); Mure, Ps) Z.S., 1865. 
p- 739; Schl., Mus. Pays Bas, vii., p. 169 (1876). 
Characters.—Hairs of body long, but thin on the head, body, 
limbs and tail; hair of crown very long and projecting over 
the face and the sides of head, forming what has been 
called a “hood.” Face nude, flesh-coloured ; cheeks and 
lower jaw nearly nude also, but the skin of a blackish hue. 
Hair on back black, intermingled with numerous others which 
are yellowish-grey in colour ; crown and back of head, hands, 
and feet black—the hairs black throughout. Nude part of tail 
flesh-coloured. ‘The hands have a rudiment of a thumb in the 
shape of asmall tubercle. Length of body, 14% inches ; of tail, 
27% inches. 
Distribution The Hooded Spider-Monkey is very rare, and 
very different from any other member of its group in regard to 
the hair of its head. Its native country is still a matter of uncer- 
tainty. Dr. Sclater, however, remarks in the “Proceedings of the 
Zoological Society” for 1881: “I have some reason to suppose 
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