52 CEHIDJH. 



brown, washed with golden ; the outside of limbs golden fulvous ; 

 hair soft. 



? C. unicolor, Spix, Bras. t. 4 ? Cebus chrysopes, F. Guv. Mamm. 

 Lith. t. C. chrysopus, Fischer. 



Hab. Brazil? Columbia. 



15. Cebus subcristatus. The Bonnel-Sapajou. B. M. 



Fur blackish brown ; outside of legs yellowish-washed ; sides 

 of face palo ashy ; front of the shoulders and of the upper arms yel- 

 lowish ; toes and fingers elongate, very slender. Hair of the crown 

 elongate, divided by a central line, and diverging to the eyebrows, 

 forming an erect transvcrso crest behind them. 

 Cebus subcristatus, Gray, P. Z. S. 18G5, fig. ! 



Var. Frontal crest not so distinct ; toes shorter. 



Hab. South America. 



VI. Hairs of the crown elongate, erect, diverging in all directions, forming a 



kind of cap. 



16. Cebus capillatus. The Capped Cebus. B. M. 



The hairs of the crown elongate, diverging in all directions ; fur 

 rather elongate, brown, slightly washed with yellow, especially on 

 the thighs ; sides of the forehead greyer ; sides of neck, outsides of 

 the shoulders, and arms fulvous ; crown and nape blackish. 



Cebus capillatus, Gray, P. Z. S. 1865, fig. ! 



Hab. Brazil. 



Tribe IV. CALLITUICHINA. 



Grinders $, bluntly tubercular. Canines moderate. Cutting-teeth 

 erect, in a regular series with the canines. Head rounded. Lower 

 jaw dilated behind. Eyes moderate, diurnal. Nostrils far apart, 

 lateral. Tail very long, lax, straight. 



Callitrichina, Gray, P. Z. S. 1849. 



6. CHRYSOTHRIX. 



Fur soft, close, erect. Tail cylindrical, elongato, covered with 

 short hair ; end rather tufted, only slightly prehensile. Canines mo- 

 derate. Eyes large. Ears large. Septum of nose very broad. 

 Lower jaw narrow behind. Skull much elongated, very large be- 

 hind. Septum of the orbit membranaceous. Spinous processes of the 

 lumbar vertebrse trapezoid. 



Chrysothrix, Kaup ; Wagner, 1842; Saimiris, Is. Geoff'. 184 ? Sa- 

 guinusand 1'ithecosciuvus, Lesson. Callithrix, sp., Geoff. Suilniri, 

 Cuvier ; Pouchet. 



