CEBUS 91 



Cebus unicolor Spix. 



Cebus unicolor Spix, Simiar. et Vespert. Bras., 1823, p. 7, pi. IV ; 



Fisch., Syn. Mamm., 1829, p. 48; Less., Spec. Mamm., 1840, 



p. 155; Wagn., Schreb., Saugth. Suppl., I, 1840, p. 207; V, 



1855, p. 98. 

 Cebus gracilis Gray, List Spec. Brit. Mus., 1843, p. 12, (nee Spix, 



desc. nulla). 

 Cebus (Pscndocebus) unicolor Reichenb., VoUstand. Naturg. 



Affen, 1862, p. 30, fig. 84. 

 Cebus flavescens Gray, Proc. Zool. Soc. Lond., 1865, p. 827, juv. ; 



Id. Cat. Monkeys, Lemurs and Fruit-eating Bats, Brit. Mus., 



1870, p. 51 ; Forbes, Handb. Primates, I, 1894, p. 217. 



PALE CAPUCHIN. 



Type locality. Ega on the River Teffe, Brazil. Type in Munich 

 Museum. 



Geogr. Distr. Forests of the Rio Teffe, Brazil. 



Color. Forehead and sides of head, flanks, limbs and under parts 

 of body, pale yellow ; hinder parts of crown and nape, dorsal region, 

 and rump, reddish brown ; hands and feet pale reddish brown ; tail and 

 hinder part of thighs, rump and about tail, mars brown. Ex type in 

 Munich Museum. 



Measurements. Total length, 850; tail, 300; foot, 133. Ex type 

 Munich Museum. Skull in specimen. 



Spix's type is, as the measurement shows, a rather large monkey for 

 a member of the genus Cebus. In general appearance it is a pale yel- 

 lowish animal tinged in places with reddish, or reddish brown, and 

 with a reddish tail. It is in only a fair degree of preservation, and has 

 lost considerable hair on various parts of the body. The open mouth 

 of the specimen shows the teeth which are remarkable for the great 

 length of the canines. Spix's figure is a fair representation of the 

 species but is too red, at least as the specimen is to-day. It may pos- 

 sibly have faded. According to Spix the specimen came from the 

 forest bordering the River Teffe near the village of Ega. 



The type is, apparently, the only specimen he procured. It does 

 not resemble very closely any of the species of Cebus, but perhaps is 

 nearer' to C. variegatus than any other though much lighter in color. 



Gray's type of C. flavescens is quite immature, probably not more 

 than three fourths grown, and it would be a very unsatisfactory repre- 

 sentative of a species if distinct from all others, which happily it is not. 

 It is doubtless a young individual of C. unicolor Spix, and therefore 

 Gray's name must become a synonym. An example like this without 



