- i65 - 



the frontal surface is also rugase with small warty exostoses. This 

 stands withoiit doubt in connection with a habit of butting with 

 the forehead. It may be concluded that thèse bucks are rather 

 pugnacious. Their horns are also well developed, stoiit at their 

 bases and transverselv ringed with rather thick proniinent ridges, 

 about 5-7 in number. The points are smooth and sharp. The best 

 horns I hâve measured had a length of 106 mm. and a maximum 

 basai diameter of 32 mm. 



With regard to colour this Duiker does not vary very much. 

 Some are of course more vividly red, especially on the back and 

 hind quarters, others are more or less brownish on the back. As 

 Thomas justly bas remarked this Duiker bas the hair along the 

 upper neck as a rule directed forwards, but I hâve seen a few 

 exceptions from this rule. Still more characteristic for the species 

 is, however, that its neck is so scantily hairy, that it often appears 

 quite naked. 



The distribution of this species extends from the « district du 

 Bas-Uele » (f. i. Bambili) and the Ituri forest [f. i. Béni in the 

 east (')] through the Stanleyvilie district as far south as to the 

 district of Lake Leopold II [f. i. Inongo and Oshwe (D' Maes)]. 



The measurements of the skulls communicated abovegive further 

 proofs, that the Duiker from the Kabwe forest near Rutshuru, 

 which I hâve described under the name C. Weynsi rutshuricus (") 

 is quite différent from the typical C. Weynsi in having a smaller 

 skull with shorter preorbital région, but broader forehead and 

 nasals. 



Cephalophus nigrifrons kivuensis n. subsp. 



An adult female Duiker (n" 1275) from « région du lac Kivu » 

 (L' Moulron) differs very distinctly from ail the spécimens of 

 C. nigrifro7is Claiidi from other parts of Belgian Congo and 



(■) Even from Uganda it is iiientioned by Lydekker : Cat. Ung. Mamm. lirit. Mus. 

 (^) K. Vet. Akad. HanJl., Bd. 58, Stockholm, 1917, n" 2, pp. 86-88. 



