THE GUENONS. 



49 



whiskers black ; rump and under side of the base of the tail 

 rufous. 



Distinguished from C. peiaurista by its black limbs, reddish 

 rump and base of tail. 



Distribution. — West Africa : Cameroons and the Delta of the 

 Niger. 



VII. THE BLACK-CHEEKED GUENON. CERCOPITHECUS 

 MELANOGENYS. 



Cercopithecus ?nelanogenys^ Gray, Ann. and Mag. Nat. Hist., 



xvi., p. 212 (1845); id., P.Z. S., 1849, p. 7, pi. ix., fig. 2 ; 



id., P.Z. S., 1868, p. 182 ; id., Cat. Monkeys Brit. Mus., p. 



21 (1870) ; Scl., P. Z. S., i860, p. 246 ; Monteiro, P. Z. S., 



i860, p. 112; Jentink, Notes, Leyden Mus., x., p. 11 



(1888); Sclater, P. Z. S., 1893, p. 245. 



Cercopithecus picturatus^ Santos, Journ. Sci. JJsb., xi., p. 98 



(1886). 



Characters. — The white nose spot cordate in shape; a band 



across the forehead above the eyes passing backwards over 



the ears, and over the lower cheeks, black ; region between 



the eye and the ear whitish ; back finely grizzled with black 



and orange ; centre of the back washed with deep rufous ; 



outside of the legs dark grey, becoming black on the hands 



and feet; tail dark rufous. Length of body, 15^ inches; tail, 



about 17 inches. 



The black lower cheeks, and the white region between the 

 eye and the ear distinguish C. tnelanogenys from C. niciitans 

 and C. sta7npfiii. 



Distribution.— West Africa : Angola. " It is very abundant 

 at Encoge, three days' journey to the south of Bemba." {Mo7i- 

 teiro.) 



3— V. 2 E 



