542 Mr. 0. Thomas on 



muzzle, outside V-sliaped black mark, bufFy white, quickly 

 fading- into pure white of chin and thi-oat. Hands and feet 

 near " clay-colour." Tail dark above, whitish beneath. 



Skull rather short, rather wide across zygomata, brain- 

 case small. 



Dimensions of the type : — 



Head and body 60 mm.; tail 76; hind foot 15; ear 10. 



ISkull : greatest length 15) (c.) ; basilar length 14 ; zygo- 

 matic breadth 11 ; nasals 7"5 ; interorbital breadth 3; brain- 

 case breadth 8 ; diastema 5 ; upper mplar series 8. 



Bah. Kirui, Elgon, British East Africa. Alt. 6000'. 



Ty}<e. Old male. K,udd Collection. Ori-^inal number 152. 

 Collected by Mr. E. Kemp, 30th August, 1U09. 



A fine series of thirteen specimens of both sexes. 



In size and the presence of the black dorsal stripe the 

 present species closely approaches D. jamesoni from the 

 Transvaal; but it is much duller in colour, the dorsal stripe 

 never extends in fiont of the shoulders, rarely as far, and its 

 skull (especially the bullae) is somewhat smaller. 



LXX. — New African Mammals. By Oldfield Thomas. 

 (Published by permission of the Trustees of the British Museum.) 



Cercopithecus ascanius wkitesidei, subsp. n. 



A spot-nosed monkey agreeing with true ascanius in 

 ha\ing red hairs on the ears, but with the dark cheek-stripe 

 much less developed. 



General colour above a warm tawny-olive, the dorsal 

 hairs ringed with black and ochraceous. Under surface 

 sharply defined creamy white. Nose-spot " pinkish buflF," 

 not white as is usual. A well-marked black frontal line, 

 passing round to the base of each ear. Temporal whorl 

 present, but inconspicuous, its hairs dull creamy-white ; 

 hairs below it tipped with black, and so forming an in- 

 distinct darker cheek-band, but none of the hairs are black 

 to their bases, and there is nothing of the strong black 

 cheek-patch so conspicuous in true ascanivs. Hairs of ear 

 orange-rufous. Outer side of arms blackish from elbows 

 downwards, the dark passing quite round the wrists and 

 lower arms. Inner sides j)roximally white. Legs externally 

 like back to knees, then slaty greyish, internally white to 

 ankles ; feet black, slightly ticked with buffy. Tail above 



