THE SPIDER MONKEYS. 237 



the body, that on the forehead erect and directed backwards, 

 that on the top of the head long, projecting forward. Face 

 and muzzle, except a black line from the side of the nose and 

 inner corners of the eyes to the cheeks, flesh-coloured. General 

 colour uniform black, but the whole under surface deep bright 

 rufous, this colour extending but slightly on to the inner 

 surface of the limbs. Thumbs entirely wanting. 



Differs from A. geofroyi by its flesh-coloured face and by 

 the two colours of the upper and under sides being clearly 

 defined. Length of body, 12 inches; of tail, 15^ inches. 



Distribution. This species was first discovered on the Atrato 

 river, in Northern Colombia, and has since been found in 

 Panama. 



HaMts. The Red-bellied Spider-Monkey is very rare, only 

 one or two specimens having yet been obtained. Nothing is, 

 therefore, known of its habits. 



IV. THE RED-FACED SPIDER-MONKEY. ATELES PANISCUS. 



Simia paniscus, Linn., Syst. Nat., i., p. 27 (1766). 



Ateles pentadactylus, Geoff., Ann. Mus., vii., p. 269 (1806) ; 



Schl., Mus. Pays Bas, vii., p. 172 (1876, in part). 

 Ateles paniscus, Geoff., Ann. Mus., vii., p. 270 (1806) ; Gray, 



Cat. Monkeys Brit. Mus., p. 42 (1870); Schl., Mus. Pays 



Bas, vii., p. 169 (1876, part.). 

 Le coaita, F. Cuv. et Geoffr., Nat. Hist. Mamm., liv., v. (Avril, 



1819). 

 Sapajou paniscus, Slack, Proc. Acad. Nat. Sci. Philad., p. S9 



(1862). 



Characters. Very similar to A. ater in its coarse and en- 

 tirely black fur, but differing in the naked and flesh-coloured 



