THE SPIDER-MONKEYS. 239 
are also annually killed for food, their flesh being held in high 
esteem by the natives. 
V. THE WHITE-WHISKERED SPIDER-MONKEY. ATELES 
MARGINATUS. 
Ateles marginatus (nec Humb.), Geoffr., Ann. Mus., xiii, 
go> pl to (71309); Kuhl, Beitr. Zool., p. 24 (1820) 
Gray, Cat. Monkeys Brit. Mus., p. 43 (1870); Schl., 
Mus. Pays Bas, vii., p. 174 (1876). 
Coaita a front blanc, femelle, Fr. Cuv., Hist. Nat. Mamm., 
livr. xii. (Avril, 1830). 
wees frontals, Bennett, P. Z. S., 1831, p: 38. 
Characters.—Similar in size and coloration to A. paniscus. 
Body lean; hair moderately long and coarse. Face naked, 
black, except the skin round the eyes, which is flesh-coloured ; 
general colour black ; under surface of body and inner sides of 
limbs, ashy-grey. It differs from A. paniscus by having the 
forehead, crown of head, a spot on each side of the nose, and 
the whiskers, white. 
A specimen in the British Museum has four pre-molars in 
each upper jaw, instead of the normal three of the Cedide. 
Distribution—This species was discovered by Humboldt on 
the banks of the Santiago river. Mr. Bates says “it is never 
met with in the alluvial plains of the Amazons,” nor, he believes, 
on the northern side of the great river-valley, except towards 
its head-waters near the Andes. 
Habits.—According to Von Humboldt, this Spider-Monkey 
—known as the “‘ White-Whiskered Coaita ”—is very fierce and 
libidinous. Mr. Bates encountered this large and handsome 
species on the Cupari river, a tributary of the Tapajos, one 
