CEBUS 99 



Cebus chrysopus F. Cuvier. 



Cebtis chrysopus F. Cuv., Hist. Nat. Mamm., 1825, pi. ; Fisch., 

 Syn. Mamm., 1829, p. 51 ; Wagn., Schreb., Saugth. Suppl., I,' 

 1840, p. 298 ; V, 1855, p. 94 ; Less., Spec. Mamm., 1840, p. 153 ; 

 I. Geoff., Cat. Primates, 1851, p. 47; Dahlb., Stud. Zool. Fam. 

 Reg. Anim. Nat., fasc. I, 1856, pp. 164, 168 ; Gray, Proc. Zool. 

 Soc. Lend., 1865, p. 827 ; Id. Cat. Monkeys, Lemurs and 

 Fruit-eating Bats, Brit. Mus., 1870, p. 51; Forbes, Handb. 

 Primates, I, 1894, p. 218. 

 Cebus (Calyptrocebus) chrysopus Reichenb., Vollstand. Naturg. 



Affen, 1862, p. 37, pi. VII, fig. CIX. 

 Type locality. Unknown. 



Geogr. Distr. Colombia, (Plee). Type not in Paris Museum. 

 Genl. Char. Similar to C. albifrons but smaller and paler. 

 Color. Fore part and sides of head in front of ears white, back 

 part of crown and occiput mummy brown ; dorsal stripe very narrow 

 at neck and widening as it goes until it covers all the rump, cinnamon 

 red ; shoulders, arms to elbows, and flanks pale yellow, probably faded ; 

 upper edge of thighs from hips to knees, legs and feet, forearms and 

 hands rather pale ochraceous rufous, outer side of thighs paler ; inner 

 side of limbs ochraceous rufous ; chin, throat, sides of neck and under 

 parts of body pale yellow ; tail above dark brown tinged with red, 

 becoming golden towards tip. 



Measurements. Total length, 833.4; tail, 406.4; foot. 126.6. 



The types of F. Cuvier's species are not now in the Paris Museum, 

 and it is very doubtful if any number of them ever were placed in 

 the collection. They were menagerie specimens almost without excep- 

 tion, and without any certain locality, for in those days the exact 

 habitat of any animal was little considered; it was enough if the con- 

 tinent from whence an example came was known. 



So the type of C. chrysopus is not extant to-day, but there are 

 several specimens in the Museum and the above description was 

 taken from one of the best preserved, although doubtless the more 

 delicate colors of the pelage have faded and lost much of their depth 

 of hue. 



It is a much smaller and paler colored animal than C. albifrons 

 and belongs to the group of this genus of monkeys with the front half 

 of the head white. Two of the Museum specimens came from Colom- 

 bia, brought by i\l. Plee in 1826. 



