11. ovAKARIA. 61 
2. Chiropotes Satanas. Zhe Brown Cuvio. B. M. 
Far ashy brown; face, crown, the beard, limbs, and tail densely 
hairy, hairs elongate ; chin-beard moderate. 
Cebus Satanas, Hoffm. Mag. Berl. i. p. 93,1807. Brachyurus Israélita, 
Spix, Bras. t. 76. Chiropotes couxio, Lesson. 
Hab. Brazil. 
In the Paris Museum, the male has the back brown and the wig 
black ; the female, back and wig fulvous; young, nearly uniform 
brown, and the wig slightly developed. 
8. Chiropotes ater. The Black Cusxio. B.M. 
Far black, shining ; hairs of eyebrows projecting. Young. Black, 
with very short pale tips to some of the hairs on the back ; the hair 
of the crown radiating from the centre and projecting forwards ; 
beard rudimentary ; tail slender, as long as the body and head. 
Hab. Brazil? 
4, Chiropotes albinasa. The White-nosed Cusio. 
Fur of body and head deep black, pale-washed ; nose white. 
Pithecia albinasa, I. Geoff. Comp. Rend. 1848, xxviii. p. 298; Arch. 
du Mus. x. p. 559 ; Castelnau, Expéd. Amér. Sud, t. 2. f. 2 (young). 
Hab. Brazil. Mus. Paris; a single young specimen. 
11. OUAKARIA, 
Fur short, silky. Face short, subcylindrical. The crown and 
forehead with short hairs directed forwards. The chin scarcely 
bearded. Legs elongate. Lower jaw dilated behind. The lower 
cutting-teeth very much shelving. 
Brachyurus, I. Geoff. Brachyurus, sp., Spix. Cacajao, Lesson. 
Oudlauia’ Go, Eo. § 1858, p. ‘iad os 
The converging, slender, shelving lower cutting-teeth, the slender 
limbs, and short tail show an affinity with Jndris (in Lemuride). 
M. I. Geoffroy describes the tail of Brachyurus culvus and B. rubi- 
cundus as very short, bushy, about a centimetre long. There are four 
specimens in the British Museum which agree with the description of 
B. calvus ; but three of them have the tail about the same length and 
form as in O. melanocephala—that is, about one-third the length of 
the body ; and that of the other is short ; but then it appears to have 
been cut or broken off. The vertebra of the tail of the small white 
specimen is 6 inches long, so that the length of the tail in the 
stuffed specimen does not depend on the stuffing. 
