1907.] MONKEYS OF THE GENUS CERCOPITHECUS. 725 



belonged to the animal that lived in the Gardens from August 

 1887 to January 1893. It must therefore have been at least 

 about six years old. It differs from the type in being less 

 yellowish red on the back, and in having the fore and hind limbs 

 and tail much greyer. The second resembles the first, but is 

 smaller and less vividly tinted. In both these menagerie- 

 specimens the nose and interocular area are quite naked. In the 

 type, on the contrary, the nose is covered with greyish pubescence. 

 Similar pubescence, moreover, is observable in varying quantity 

 upon the noses of the British Museum examples of C. cephus 

 ceplmts. It has been stated by Pucheran (Rev. Mag. Zool. 1857, 

 p. 195) and by Pousargues (Bull. Mus. Paris, iii. p. 52, 1897) 

 that in the young of C. cephus the nose is covei-ed with a diamond- 

 shaped patch of hairs. This statement is not borne out by all the 

 young examples that I have seen. 



Cercopithecus eryxhrotis Waterh. (Plate XLI. fig. 5.) 



Cercojyithecus erythrotis Waterh. P. Z. S. 1838, p. 59, and 1841, 

 p. 71 (and of subsequent authors). 



The essential characters of this species are stated in the above- 

 given key (p. 722). 



Loc. W. Africa : Fernando Po and Cameroons. 



Pousargues classified this species with his Ascanius-HQction of 

 the Rhinosticti ; but I think there is no doubt that its affinities- 

 lie with C. cejihus, which that author excluded from the Rhino- 

 sticti. 



Cercopithecus sclateri Poc. 



Cercopitliecus sclateri Poc. P. Z. S. 1904, pp. 433-436, fig. 87 

 (in text). 



The characters of this species are described and its affinities 

 discussed at leng-th in the paper cited above. 



Loc. W. Africa : Benin. 



The .ETHIOPS-group. 



Cercopithecus Ei-xl. (s. s.) + Chlo7^ocebus+Ci/nocebus Gray. 



Face and ears black, very rarely pale and mottled with dark 

 pigment, sometimes with white hairs on the lips. Head and 

 upper side of body fairly uniformly speckled black and grey, 

 yellow, or very rarely red. Outside of both fore and hind limbs 

 also speckled and never darker, very generally lighter than the 

 body. Tail mostly the same colour as the body, the end some- 

 times black or yellow. Whiskers, except in C. nigroviridis, 

 directed upwards. Under side and inside of limbs pale. 



Bistr. From Sierra Leone to Abyssinia, thence southwards to 

 Cape Colony. 



