■690 MB. R. I. POCOCK — A REVISION OF [June 18, 



Subsp. STUHLMANNi Matschie. (Plate XXXIX. fig. 2.) 

 Cercopithecus stiMmanni Matschie, SB. Ges. nat. Fr. Berlin, 

 1893, p. 225. 



Cercopithecus otoleucus P. L. Sclater, P. Z. S. 1902, vol. i. p. 237, 



pi. XXV. 



Said to resemble C. leucatnpyx in the blackness of the head, 

 the neck, and the anterior limbs, the greyish tint of the upper 

 side, the white frontal band, white lips and chin, and the grey 

 annulated hairs on the whiskers ; and to differ from that species 

 in having the greater part of the tail, the inner side of the legs, 

 and the belly coloured like the back, and the outer side of the 

 hind limbs also coloured like the back but darker, and the throat 

 as well as the chin snow-white, and with some longer yellowish- 

 white hairs on the border of the ear. 



Length of body 660 mm., of tail 945 mm. 



Loc. E. Africa : north of Kinjawanga,, a little to the west of 

 Ituri, between Lakes Albert Edward and Albert, 29° 35' E. lat., 

 0° 25' N. long. ; also Kwidjvi Island in Lake Kivu. 



In the type of Cercopithecus otoleiicus now living in the Gardens, 

 the head, nape, area between the shoulders, shoulders, and fore 

 legs are jet-black. The brow-band is grey-white, not snow-white, 

 the hairs of its anterior portion being greyish and speckled like 

 those of the cheek. The hairs of the ears are not white, but 

 faintly tinged with pinkish red. The skin of the face is deep 

 slate, with short whitish hairs on the lijjs. The thi'oat and chin 

 are white, and there is a dusky patch crossing the fore part of 

 the chest behind the white of the throat. The whole body above 

 is speckled grey and black. The belly also is speckled like the 

 back, but not so thickly, and the thighs externa;lly are speckled 

 and not sharply marked ofi^ in coloui- from the saci'al area, the 

 tints of the two gradually blending. The tail is black at its 

 distal end, speckled with grey proximally. 



The specimen came from Latuka Mountain in Xorth Uganda 

 [Delme RadcUffe). 



Dr. Matschie appears to think that the type of C. otoleucus may 

 be distinguished from that of C. stuhhnanni by having no white on 

 the chin, and the hind legs and tail black. This is not the case, 

 as the above-given diagnosis shows, and it is highly probable that 

 the two are subspecifically identical. 



Dr. Matschie has recently described, under the name C. neu- 

 manni, some specimens from Kwa Kitoto in North Kaviiondo 

 (SB. Ges. nat. Fr. Berlin, 1905, p. 266, pi. x.). This so-called 

 species is said to differ from C. stuhhnanni in that the hairs of 

 the brow-band are not grey-white but nai-rowly banded with 

 dusky grey, and the hairs on the ears grey and not white ; the 

 hind legs also are dai'ker and only slightly speckled, and the belly 

 mouse-gi'ey and speckled instead of olive-grey and speckled. 



In the British Museum (Reg. no. 1.8.9.17) there is a skin of 

 a specimen procured by Sir H. H. Johnston at an altitude of 

 4000 feet in the Mpanga Forest, Avhich appears to differ from 

 the type of C. otoleucus only in the absence of greyish-white hairs 



