ORDER QUADRUMANA. 223 



The Co ait a, (Simia Paniscus, L.) Buff. XV. 1. 



Covered altogether with black hair like the 

 Chamek, but without any visible thumb. 



The Co ait a with bordered face, (Ateles Marginatum, Geoff.) 

 Ann. Mus. XIII. pi. x. 



Black, a border of white hairs round the face. 



The white-bellied Coaita, (Sim. Beelzebut. Briss. Geoff.) 

 Ann. Mus. VIl.pl. xvi. 



Black above, white underneath. The circum- 

 ference of the eyes flesh-coloured. 



The fawn-coloured Coaita, (Ateles Arachnoides, Geoff.) 

 Ann. Mus. XIII. pi. xx. 



Fawn-coloured, or red. 



All these animals come from Guiana or Brazil. 

 Their fore-feet are extremely long, and very slender, 

 and their entire gait remarkably slow *. 



The other Sapajous (Cebus. Geoff.) have distinct 

 thumbs, and the tail altogether covered with hair 

 though prehensile. 



The Sajou, {Simia Apella. L.) and the Sai {Simia Capu- 

 cina. L.) Buff. XV. iv. v. and VIII. ix. 



Both of different browns. The first has the 

 circumference of the face blackish, the other 



* They exhibit some remarkable resemblances to man in the 

 muscular system. They alone of all animals have the biceps of 



the thigh, formed like ours. 



R 2 



