62 CEBIDE. 
* Fur black, yellow- and red-varied. 
1, Ouakaria melanocephala. B. M. 
Black ; back and sides of body yellow; loins, outside of thigh, and 
end of tail red chestnut. 
Simia melanocephala, Humboldt, Obs. Zool. t.29 (not good). Pithecia 
melanocephala, ig e Brachyurus ouakaria, Spiz, Bras. t. 8 
(good). Ouakaria Spixii, Gray, P. Z. S. 1849, p. 10, fig. ! 
Hab. Brazil. 
** Fur whitish or reddish. Albino of the former. 
2. Ouakaria rubicunda. The Red Acari. 
Fur of the body and limbs bright red, of neck fulvous yellow, 
of nape pale yellow. 
Brachyurus rubicundus, Is. Geoff. Cat. Mamm. p. 57, 1851; Arch. du 
Fie . 965, t. 80; Castelnau, Expéd. Amér, Sud, t. 4. £. 2 (tail 
too short). 
Hab. Brazil. 
8. Ouakaria calva. The White Acari. B.M. 
Throat deep golden red. Fur fulvous, whitish on the back, and 
yellow or golden below and on inner surface of limbs; tips of the 
hairs of the crown black, and of some of the hairs of the back grey. 
Female. Beard elongate, red and black. 
Var. Back with some reddish hairs. 
Brachyurus calvus, Is. Geoff. Cat. Mamm.’ p. 57; Arch. du Mus. v. 
. 560; Castelnau, Expéd. Amér. Sud, t. 461 (tail too short). Oua- 
ane calvus, Gray, P. Z. S. 1849, p. 10, fig. (skull) ! 
Hab. Brazil: Para. 
Tribe VIII. HAPALINA. 
Grinders 3.2 (as in old-world monkeys). Lower cutting-teeth 
vertical, in aregular series. Lower jaw not dilated behind. Nostrils 
far apart, lateral. 
* Lower cutting-teeth elongate, slender, linear, of the same size as the 
canines. 
12, HAPALE. 
Conch of ears rather large, exposed, bald externally, with cross 
band of elongated hairs on the inner surface of the conch, forming 
an elongated pencil. Tail annulated. Back punctated, rarely indis- 
tinctly banded. Lower cutting-teeth elongate, slender, linear, as 
high as the canines. 
Jacchus hapale, Gray, P. Z. S. 1866. 
