712 MR. R. I. POCOCK — A REVISION OF [June 18, 



in the plate in the ' Proceedings of the Zoological Society ' for 

 1894. 



The exact locality of the type was not known ; but in August, 

 1904, a beautiful example of the species, obtained by Mr. J. D. 

 Hamlyn in Brazzaville, on the Congo, whither it was brought by 

 natives, was deposited in the Zoological Gardens by the Hon. 

 Walter Rothschild. 



Dr Forbes quite correctly placed this species in the same category 

 as G. grayi. In this he has been followed by Trouessart. 



The most distinctive characteristics of the species are : — the 

 extension of the white brow-band laterally as far as the ears ; the 

 reddish-brown colour of the hind legs from the hip to the ankle, 

 the hairs of this limb, however, are distinctly speckled with black ; 

 the presence of an ill-defined dorsal blackish band and of a con- 

 siderable quantity of yellow in the hairs on the sides of the body 

 and on the belly, and bordering the white of the innei' side of the 

 limbs. 



Cercopithecus grayi Fraser. 



Subsp. GRAYI Fraser.. 



Cercopithecus grayi Fraser, Cat. Knows! . Coll. p. 8, 1850; 

 Matschie, SB.lGes. nat. Fr. Berlin, 1893, p. 214 ; Forbes, Monkeys, 

 ii. p. 77, pi. xxiii., 1894 (bibliography). 



Cercopithecus erxlebeni Dahlb. & Puch. Rev. Mag. Zool. 1856, 

 p. 96. 



Brow-band greatly developed and extending backwards on to 

 summit of head as a pair of whitish patches, separated mesially by 

 a narrow area of blacker hair. A broad black band across the 

 temple. Cheeks speckled with greenish yellow and black. Ear- 

 fringes long, yellowish red, standing boldly out against the back- 

 ground of the head and neck. Dorsal surface uniformly rusty 

 red nearly all over, jet-black on sacral region, yellower on nape of 

 neck ; the sides sometimes greyer (in the male) ; arms black 

 externally ; legs greyish, speckled down to ankles ; hands and feet 

 black. Tail mostly black, reddish in its basal half below. Under 

 side from chin to pubic region and inside of limbs rufous yellow. 



Loc. The British Museum has specimens from the following 

 localities: — Efulen in the Cameroons [G. L. Bates, 96.3.20.1); 

 Benito River, Congo (G. L. Bates, 0.2.5.4-6) ; Gaboon [Laglaize, 

 80.6.7.2). 



Pousargues, who, perhaps rightly, regarded C. pogonias, C. 

 erxlebeni, and C. nigripes as synonyms, and at most as representing 

 local races, records specimens from various places in the French 

 Congo, namely from Ogoue, Mayumbe, Bangui, and Ouadda, Upper 

 Oubangui. With the exception of the specimen from Mayumbe, 

 none of these showed ti'aces of black on the back. 



Pousargues and Trouessart reject the name grayi for this 

 species, alleging that no description accompanied its first publi- 

 cation. This is an error. Fraser gave a good though brief 

 diagnosis of the species in the work cited above. 



