11^ — 



The neck and upper back displav a somewhat darker shade of 

 brown, because the distal portion of the lono- liairs is dark, 

 but provided with a snbapical ring of a light sliade of fawn 

 (about 308.1), on the back the shade of brown becomes gradually 

 somewhat paler and duUer in conséquence of the subapical rings 

 becoming more buffish. Towards the fianks this colour graduallv 

 blends into a still paler brown which to a certain degree resembles 

 Oberthur's « snuff brown » (303.1), but is somewhat daller, 

 perhaps something between the shade mentioned and « choco- 

 laté » (343.1). This brown colour goes without interruption into 

 that of the outside of the fore legs, which is a little more duskv 

 than « snufFbrown » (303.3), and that of the hind legs which 

 resembles pale « chocolaté » (343.1) with a distinct touch of 

 « snufFbrown » (303.1). The tail is « snuflFbrown » (303.2), grey 

 below. The lower side and inside of legs are dirtv whitish. The 

 hands are blackish, and the feet somewhat mixed with the same. 



Another spécimen (n" 3405) from « Muhako^ (entre Penghe et :/'/(i|^^^ 

 Irumu) », collected by D' Bequaert is verv similar, but the upper 

 parts of the head are a little brighter, and the fianks hâve to some 

 degree a more vellowish tint, perhaps an addition of « chamois » 

 (325.4) to the « snufFbrown ». 



This species of Colobus difFers strikingly from ail others, which 

 I bave seen, by its brown colour and ringed hairs. The brown 

 colour appears to remind about C. Oastaleti Trouessart from 

 « Youmba, dans le bassin de l'Oubangui », and this may be a related 

 form. C. Oastaleti difFers however, bv the absence of ear-tufts, bv 

 its strongly elongated hairs (') on throat, fore-neck, shoulders and 

 upper breast, bv its broadly black hands and feet and, at least 

 partly, blackish tail, etc. 



From its neighbour in the Ituri forest, C. Ellioti Dollman, this 

 new species difFers much in colour, by the absence of red shades 

 on the back, flanks and especially fore legs. But even the hind 

 legs are much différent in colour. The fur is much softer and 

 longer in Ellioti Xhan in brunneus and so on. 



(') c uiiibrinus MaTSCHIe is also said to hâve elongaled hairs as Ouslaicti. 



