GO CRB1DJE. 



Pithecia albicans, Gray, P. Z. S. 1860, p. 231, t. 81 (not good) ! 

 Hah. Brazil : Upper Amazons and Lake Telle, Bates. 



*** Hairs cumulated. 

 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, Siqip. vii. t. 31. Siniia pithecia, Linn. Fox-tailed 

 Monkey, Mas. Lever, t. 4. ? Pithecia rufiventer, Geoff". ; Kuhl. P. 

 rufibarba, Ktthl. P. nocturna, Lesson. P. capillamentosa, Spix, 

 Bras. 1. 11. P. pogonias, Gray, Zool. Sidph. p. 13, t. 2 ! Ann. 8f May. 

 N. H. 1842, x. p. 250 1 



Hob. Brazil. 



Tho 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 $.$. Lower cutting-teeth long, shelving, converging, 

 separated from the caninos 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. 



Chiropotes, Lesson. Cacajao, Lesson. Brachyurus, Spix ; Gray, 

 P. Z. S. 1849, p. 9. Pithecia, sp., 7s. 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 tho adult. 



M. I. Geoffroy describes the animal as having the tail " notably 

 shorter than the body." In all the Museum specimens tho tail is 

 as long or longer. 



1. Chiropotes sagulata. The Yellow-backed Cuxio. 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. 110. Siniia sagulata, Traill, Wern. Soc. iii. p. 107, t. ! 

 Brachyurus Satanas, Gray, List Mamm. B. M. 13 ! 



Hub. Guiana ; Orinoco ; Demerara. 



