— 177 — 



upper neck with a smokv brownish grey colour which has a certain 

 resemblance with the darkest shades of « neutral tint » (361.3 

 and 4) and darkens tlien gradually towards tlie rump, which is 

 almost « reddish black » (344-2 and 3), in some spécimens with 

 somewhat more brownish or fawn inixed in. 



The skiills vary much is size. In two adult females the total 

 length of the same is 138 and 131 mm. resp., but in an adult maie 

 onlv 123 mm. The horns of the females are smaller 30 and 31 mm., 

 resp. in a maie 52 mm. The length of the upper molar séries is 

 38.4, 35, and 36 mm. resp.; the preorbital length 6g, 65 and 

 5g mm. resp. 



Cephalophus melanorheus œquatorialis Matschie. 



Numerous spécimens chiefly from différent parts of the aequa- 

 torial forest are counted to this race, although in most cases the 

 lower side more suitably might be said to be a pale shade of 

 « otterbrown » (354.1) than isabella-brown. The colour of the back 

 is also somewhat variable, sometimes darker, sometimes paler and 

 more brownish. In the majority of cases, at least, it is the females 

 which display the paler, somewhat more « reddish », back and so- 

 mewhat « isabelline » lower parts, but not always. 



The variation may also be somewhat local. Spécimens from 

 Béni are nearly ail darker than spécimens f. i. from Banalia. I do 

 not think, however, that this différence is of racial value. 



Sylvicapra grimmia Lin. 



This genus of Bush-Duiker is represented in the Congo Muséum 

 b\ half a dozen forms. Three of thèse belong to the southern long- 

 eared type, the remainder are short-eared. 



Sylvicapra grimmia splendidula Gray. 



Two spécimens signed only « Bas Congo » (33, 34) and one from 

 Léopoldville (2gi) appear to belong to this subspecies, which ori- 



