52 CEBIDA, 
brown, washed with golden; the outside of limbs golden fulvous ; 
hair soft. 
? C. unicolor, ae Bras. t.4? Cebus chrysopes, F. Cuv, Mamm. 
Lith. t. C.chrysopus, Fischer. 
Hab. Brazil? Columbia. 
15. Cebus subcristatus. The Bonnet-Sapajou. B.M. 
Fur blackish brown; outside of legs yellowish-washed ; sides 
of face pale 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 transverse crest behind them. 
Cebus suberistatus, Gray, P. Z. 8. 1865, 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. 1866, fig. ! 
Hab. Brazil. 
Tribe IV. CALLITRICHINA. 
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, 8. 1849. 
6. CHRYSOTHRIX. 
Fur soft, close, erect. Tail cylindrical, elongate, covered with 
short hair; end rather tufted, only slightly prehensile. Canines mo- 
derate. Eyes large. ars 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 vertebre trapezoid. 
Chrysothrix, Kaup ; Wagner, 1842 ; Saimiris, Is. Geoff. 184 P Sa- 
guinus and Pithecosciurus, Lesson. Callithrix, sp., Geof. Saimiri, 
Cuvier ; Pouchet, 
