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. 



Akks margtJiatus (nee Humb.), Geoffr., Ann. Mus., xiii., 



p. 92, pi. 10 (1809); Kuhl, Beitr. Zool, p. 24 (1820); 



Gray, Cat. Monkeys Brit. Mus., p. 43 (1870); Schl., 



Mus. Pays Bas, vii., p. 174 (1876). 

 Coat fa a front dianc, fe?)ielle, Fr. Cuv., Hist. Nat. Mamm., 



livr. Ixii. (Avril, 1830). 

 At eles frontalis, Bennett, P. Z. S., 1831, p. 38. 



Characters. — Similar in size and coloration to A. faniscus. 

 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 difl"ers 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 Cehidce. 



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 



