62 CEBID^. 



* Ftir 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. 



Siniia melanocephala, Humboldt, Obs. Zool. t. 29 (not good). Pithecia 

 melanocephala, Geoff. Brachyurus ouakaria, Spix, Bras. t. 8 

 (good). Ouakaria Spixii, Gray, P. Z. S. 1849, p. 10, fig. ! 



Hob. Brazil. 



** Fur ivhitish 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 

 Mus. V. p. 965, t. 30 ; Castetnau, Exped. Amer. Sud, t. 4. f. 2 (tail 

 too short). 



Hah. Brazil. 



3. 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.' Tp. 57; Arch, du Mus. v. 

 p. 560; Castelmiu, Krped. Amer. Sud, t. 461 (tail too short). Oua- 

 karia calvus, Graij, P. Z. S. 1849, p. 10, fig. (skull) ! 



Hab. Brazil : Para. 



Tribe VIII. HAPALINA. 



Grinders ^ . ^ (as in old-world monkeys). Lower cutting-teeth 

 vertical, in a regular 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. 



JacchuB hapale, Gray, I'. Z. S. 18G6. 



I 



