— 137 — 



legs may also be more or less brio;ht and so on, but or the whole 

 tlie spécimens agrée very well with each other. 



Almost the whole séries is from varions localities within the 

 district of Lake Leopold II. Elliot mentions also spécimens from 

 Batempa in the Sankuru district. It will thus appear from our 

 présent knowledge that C. Wolfi has its habitat on and along the 

 northern side of the Kasai river and its tributary Sankuru river. 

 One spécimen in the Congo Muséum is also labeled « Stanley 

 Falls ». It may thus perhaps reach across the whole Congo basin. 



Cercopithecus pyrogaster, n. sp. 



One spécimen (n° 1007) collected by Charliers at Atene, 

 Kwango and received in the Congo Muséum, Jan. igi2. 



Forehead with a comparatively narrow browband which basai ly 

 is mixed whitish and with some black hairs. Distally the light hairs 

 become light buff (Oberthur : 309.1). Laterally this browband 

 is continued in a broad buffband on the sides of the crown reaching 

 to above the ears. The gênerai colour of this band is buff (309,1) 

 but the hairs hâve narrow black tips and whitish subapical rings. 

 Below this there is a rather broad, black band (some hairs hâve 

 pale subapical rings) from the eye to the ear, which latter is tufted 

 with « duU brickred » (Oberthur : 330.4). The nose is sparsely 

 hgiry with black and the upper lip with gre_yish white. The cheeks 

 are ornamented with strongly developed whiskers which are direc- 

 ted backwards and outwards. Thèse are on their upper side basally 

 buff (309,4) distally more speckled by means of the long hairs being 

 ringed with black and pale bufïîsh. On the lower side the whiskers 

 are brighter more inclining to light rust red (318. i). The crown of 

 the head, nape, neck, upper back, outer side of arms including the 

 hands and flanks are speckled with yellowish white rings to the 

 black hairs (the under fur is dack grey). The lengtb of the longest 

 hairs of the back is about 6 cm. or somewhat less. The centre of 

 the back from behind the interscapular and to the sacral région 

 has a strong chestnut shade (reminding about the same in C. Wolfi), 



