730 MR. R. I. POCoCK — A REVISION OF [June 18, 



collection of the Society, mentioned below under the name 

 C. cBthiops hilgerti, should be referred here. 



Subsp. HILGERTI Neumaim. 



Cercopiihecus hilgerii Neumann, 8B, Ges. nat, Fr. Berlin, 

 no. 3, p. 50, 1902. 



Reddish olive. Fore limb grey ; hind limb grey from knee ; 

 hands and feet blackish, but the black not shai'ply defined from 

 the grey. Tail blackish grey mixed with olive above, grey 

 beneath, with white tip. Whisker-hairs long, white ; face black 

 with narrow frontal band. Upper side of head mixed with black ; 

 a rtisty-red spot at base of tail below. White below and on inner 

 side of arms. 



Log. Webbi Schebeli (Gallaland). 



In the young there is no rusty spot at root of tail and the feet 

 and hands are grey. 



In the collection of the Society there is the skin of an adult 

 male specimen ticketed " N.E. Africa, 17.6.71 to 14.10.75;] 

 which in most points agrees very well with the description of 

 C. hilgerti, except that the upper side is thickly speckled black 

 and yellow without any tinge of red. As in typical C. ceihiops, 

 thei'e is a conspicuous white tuft at the root of the tail on each 

 side and the upper and lower lips ai'e clothed with many short 

 white hairs, features which ai'O not mentioned by ISTeumann ; and 

 a young example now living in the Gardens, received fi'om 

 Mrs. W. N. MacMillaii from Southern Abyssinia, belongs appa- 

 rently to the same subspecies. Thei-e is no red at the root of the 

 tail, howevei-. This may perhaps be due to the immaturity of 

 the specimen. 



Cercopitheous matschiei Neumann. 



Cercopithec'us 'matschiei Neumann, P. Z. S. 1902, ii. p. 143; 

 id. SB. Ges. nat. Fr. Berlin, no. 3, p. 51, 1902. 



Colour chestnut-red, mixed with black. Limbs pale olive- 

 yellow, grey beneath ; hands and feet blackish. Tail olive-yellow 

 mixed with black, pale beneath, with greyish -white tip. Whisker- 

 hairs long and white. Under side wliite ; a, rusty-red spot on the 

 base of the tail. 



Loc. Omo and Sobat Rivers. 



This form would be regarded by myself, I suspect, as a subspecies 

 of C. cethiops. It certainly difi'ers, however, from that species, as 

 well as from all the species of the group known to me, in its 

 chestnut-red coloration. 



Cercopithecus djamdjamensis Neumann. 



Cercopithecus djcmicljamensis Neumann, P. Z. S. 1902, ii. p. 143 ; 

 id. SB. Ges. nat. Fr. Berlin, no. 3, p. 51, 1902. 



Colour as in C matschiei, but paler and j^ellower red ; hind 



