60 CEBIDE. 
Pithecia albicans, Gray, P. Z. S. 1860, p. 231, t. 81 (not good) ! 
Hab. Brazil: Upper Amazons and Lake Tefle, Bates. 
*** Fours annulated. 
4, Pithecia rufiventer. The Whiskered Yarkee. B.M. 
Greyish black, pale-washed ; hairs rather soft, with a subterminal 
yellowish ring ; forehead, like back, with moderately elongated hairs ; 
moustache yellow ; belly red. 
Young. Moustache white, beneath grey. 
Sagouin, Buffon, Supp. vii. t. 31. Simia pithecia, Zinn. Fox-tailed 
Monkey, Mus. Lever. t. 4. ? Pithecia rufiventer, Geoff; Kuhl. P. 
rufibarba, Kuhl. P. nocturna, Lesson. P. capillamentosa, Spix, 
Bras.t.11. P. pogonias, Gray, Zool. Sulph. p.18, t. 2! Ann. §& Mag. 
N. H. 1842, x. p. 256 ! 
Hab. Brazil. 
The young specimen in the Paris Museum on which P. rufiventer 
was described appears to be this species, but the belly is scarcely 
red. 
Tribe VII. BRACHYURINA. 
Grinders $.8. Lower cutting-teeth long, shelving, converging, 
separated from the canines by a space. Lower jaw dilated behind. 
Fur soft, silky. Claws blunt. Nostrils far apart. 
10. CHIROPOTES. 
Fur soft, short; tail as long as the body, and thick, club-shaped. 
Crown with hair like a wig, divided by a central longitudinal line. 
Chin large, bearded on each side. The lower cutting-teeth rather 
shelving. Limbs short, strong. 
ne ae Lesson. Cacajao, Lesson. Brachyurus, Spix; Gray, 
P. Z. S. 1849, p. 9. Pithecia, sp., Is. Geoff. 
The hair of the head is directed forward, radiating from a central 
point, in the young ; but it forms a large convex wig on each side of 
the crown, divided by a central line, in the adult. 
M. I. Geoffroy describes the animal as having the tail “ notably 
shorter than the body.” In all the Museum specimens the tail is 
as long or longer. 
1. Chiropotes sagulata. The Vellow-backed Cuwio. B.M. 
Black ; back and shoulders yellow ; hairs of back black at the base ; 
tail very thick ; beard very large. 
Simia chiropotes, Humboldt, Obs. Pithecia chiropotes, Geoff. Ann. 
Mus. xix. p. 116. Simia sagulata, Traill, Wern. Soc. iii. p. 167,t. ! 
Brachyurus Satanas, Gray, List Mamm. B. M. 138! * 
Hab. Guiana; Orinoco ; Demerara. 
