THE GUENONS. 79 



XXXVI. wolf's GUENON. CERCOPITHECUS WOLFI. 



Cercopithecus wolfi^ Meyer, Notes, Leyden Mus., xiii., p. 63 

 (1891) ; id., P. Z. S., 1894, p. 83, pi. vii. ; Sclater, P. Z. S , 

 1893, p. 258. 



Characters — Face, except the lips, which are flesh-colour, and 

 the temples, greyish-black; a yellowish-white bar across the fore- 

 head from ear to ear ; whiskers greyish-yellow ; ear-tufts red- 

 dish-brown ; upper surface dark slate-grey ; sides blue-grey, the 

 hairs barred with several pale rings, and tipped with black ; 

 dorsal stripe, narrowing towards the tail, olive-yellowish, 

 brighter on the crown, and brownish-yellow towards the tail ; 

 basal half of the tail above, ashy-grey, below white ; an orange- 

 yellow patch on the sides ; chin, sides of neck, under surface 

 of body and inner side of limbs white ; belly washed slightly 

 with orange; shoulders and outer aspect of the fore-hmb, black — 

 the hairs ringed with grey ; on the hinder edge of the fore-arms 

 an ochre-coloured stripe ; outer side of thighs and legs bright 

 red-brown, becoming orange on their anterior and posterior 

 internal margin. Length of body, 18^ inches; of tail, 24 

 inches. 



Distribution. — West Africa : the exact locality is unknown. 



VI. Cercopitheci Barbati. 



The members of this group are distinguished by possessing 

 a beard and a frontal crest. 



XXXVII. THE DIANA GUENON. CERCOPITHECUS DIANA. 



Simla diana^ Linn., Syst. Nat, i., p. 38 (1766). 



