THE GUENONS. 



77 



XXXIII. erxleben's guenon. cercopithecus grayi. 

 Cercopi^Aeais grayij Fra.ser, Csit. Knowsl. Coll., p. 8 (1850); 



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



p. 22 (1870) ; Sclater, P. Z. S., 1893, p. 256. 

 Cercopithecus erxlebenii, Dahlb. et Puch., Rev. et Mag. de 



Zool., 1856, p. 96; 1857, p. 196; Dahlb., Zool. Stud., p. 



109, pi. 5 (1856) ; Gray, P. Z. S., 1868, p. 182 ; id., Cat. 



Monkeys Brit. Mus., p. 23 (1870; in part); Sclater, 



P. Z. S., 1871, p. 36; 1893, p. 254; 1894, p. 484. 

 Cercopithecus pogonias^ Schlegel, Mus. Pays-Bas, vii., p. 8? 



(part). 



{Ftate XXX.) 

 ' Characters. — Face and ears naked, flesh-coloured ; whiskers 

 commencing under the eyes, bushy, yellow ; the ears with a 

 rufous or yellow tuft internally ; head yellow, but interrupted 

 by three broad black streaks, extending from above each eye 

 and from the nose to the back of the head ; back, anterior 

 aspect of the thighs, and the sides yellowish rufous, darker 

 towards the lower back — the hairs ringed with black and yellow, 

 upper surface and entire terminal third of the tail black. 

 Under surface of the body, inner side of the limbs, anterior 

 aspect of the thighs and legs, and the under side of the basal 

 two-thirds of the tail, yellow or rufous yellow ; region of the 

 anus white ; external aspect of the fore-limbs black ; the 

 hands and feet black. 



A female specimen of this species which lived for some 

 years in the menagerie of Lord Derby at Knowsley, and 

 died in 1836, is now in the Derby Museum, Liverpool. It 

 is the type of C. grayi, with which C erxlebeni is identical. 



Distribution. — West Africa : River Congo. 



