CEBUS 109 



rump ; rest of upper parts and flanks yellowish brown ; arms to shoul- 

 ders, thighs and sides of neck cream buff; throat, entire under parts 

 of body, inner side of arms above elbows and thighs, buff, darkest in 

 center of body; forearms and legs below knees black; hands and feet 

 black ; fingers and toes covered with grayish white hairs ; tail above 

 blackish brown to center, then pale brown to tip, sides and beneath 

 pale wood brown. Ex type British Museum. 



Measurements. Total length, 1,110; tail, 130; foot, 125. Skull: 

 total length, 95.4; occipito-nasal length, 84.4; intertemporal width, 

 41.4; breadth of braincase, 56; Hensel, 63.9; zygomatic width, 68.6; 

 palatal length, 31 ; median length of nasals, 27.9; length of upper molar 

 series, 23.1; length of mandible, 66.8; length of lower molar series, 

 26.3. Ex type British Museum. 



Gray's name is misleading, for this race is darker than C. azarw 

 generally, and no examples that I have seen are as pale as those to be 

 found in Rengger's species. His description also gives no idea of the 

 appearance of examples from Peru and Bolivia. The race in color is 

 intermediate between C. AZAitc, and C. versutus from the River Jordao 

 in western Minas Gerass. The great peculiarity possessed by this form 

 and which distinguishes it at once from the other two, is the extension 

 of the white on each side of the head into the black cap, and almost 

 forming two black patches, the front one much smaller than the one 

 behind. The fingers in most of the specimens are paler than those of 

 the two other species, being almost white. The exact range of C. a. 

 pallidus is not known, but it was obtained by Kalinowski at Santa Anna 

 in Peru and by Bridges in Bolivia. How near it may approach C. 

 AZ\RM at Chapada is not known, but it is not improbable that their 

 boundaries may overlap at some point between Peru and Matto Grosso. 



Cebus ciRRirER E. Geoffrey. 



Cebus cirrifer E. Geoff., Ann. Mus. Hist. Nat. Paris, XIX, 1812, 

 p. 110; Id. Cours Hist. Nat. Mamm., 1828, p. 8, lOme Leqon; 

 Kuhl, Beitr. Zool., 1820, p. 31; Desm.., Mamm., 1820, p. 84; 

 Wied, Beitr., 1826, p. 97 ; Fisch., Syn. Mamm., 1829, p. 45 ; 

 Less., Spec. Mamm., 1840, p. 137; Wagn., Schreb., Saugth. 

 Suppl., I, 1840, p. 209; I. Geoff., Cat. Primates, 1851, p. 44; 

 Dahlb., Stud. Zool. Fam. Anim. Natur., fasc. I, 1856, pp. 162, 

 166; Flow., Proc. Zool. Soc. Lond., 1862, p. 333; Gray, Proc. 

 Zool. Soc. Lond., 1865, p. 826 ; Id. Cat. Monkeys, Lemurs and 

 Fruit-eating Bats, Brit. Mus., 1870, p. 49. 



