710 ME. R, I. POCOCK — A REVISION OF [June 18, 



Of the large number of skins of this species — one of the 

 commonest of African Monkeys in captivity — possessed by the 

 Society, not one has a definite locality. 



Cercopithecus campbelli Waterhouse. (Plate XL. fig. 1.) 



Cerco-pithecus campbelli Waterhouse, P. Z. S. 1838, p. 61 ; not 

 of subsequent authors, or, at least, only in part. 



Closely allied to C. mona. Forehead with a large white or 

 silver-grey brow-band extending laterally further towards the 

 ears than in the middle, where it is partially divided. Cheeks 

 greyish, tinged with yellow and faintly speckled with black, the 

 hair gradually losing this tint inferioi-ly and on the neck, where 

 the colour fades impei'ceptibly away into the uniform greyish- 

 white colour of the throat. Hairs on ear like those on head, 

 speckled yellow and black. Head and shouldei^s speckled yellow 

 and black, the head rather yellower than in C. mona, and the 

 shoulders less rusty brown. Behind the shoulders and on the 

 arm the speckling gradually dies out of the hairs, which, at least 

 on the lumbo-sacral area, are of almost a uniform greyish 

 black, as also are the outsides of the thighs. Tail at base 

 blackish above and below, and the same colour as the sacral area; 

 following the black basal portion it is speckled above, grey below ; 

 its distal end is black. 



Loc. Sierra Leone. 



The type of this species came from Sierra Leone. In the 

 British Museum there are three flat native-prepai'ed skins : one 

 labelled Sierra Leone (Mr. Fraser, 45.9.6.1); a second ticketed 

 Buyabuya, Little Scarcies River inland of Sierra Leone {G. F. 

 Scott Elliot, 92.6.7.2) ; and a, third without locality (Zool. Soc. 

 55.12.24.408). I have also seen the skin of a young female 

 specimen which formerly lived in the Gardens. It has no exact 

 locality. 



G. campbelli is in some respects intermediate between C. mona 

 and G. burneUi. It is evidently a Monkey which is i-arely cap- 

 tured or killed by Europeans. 



Cercopithecus burnetti Gray. (Plate XL. fig. 2.) 



Gercopitliecus burnetti Gray, Ann. Mag. Xat. Hist. x. p. 256, 

 1842. 



Cercopithecus campbelli Sclater, Foi'bes (iiec Gray). 



This species diflers from G. campbelli in having the forehead 

 yellowish in fi'ont and the patch not so sharply defined ; the 

 cheeks and sides of the neck as f^r back as the black of the 

 shoulders are olive-grey, speckled and strongly contrasted with the 

 relatively narrower white area of the throat ; the ear-fringe is 

 reddish yellow^ and stands out against the colour of the back of 

 the head without blending with it ; the posterior region of the 

 body is blacker and not a dark sla,te-gi'ey. 



Loc. Gold Coast to the Cameroon,". 



