— 171 — 



It is more difficult to understand the very great différence in the 

 size of the biilla of the two maies, but as the bulhi of the female is 

 almost intermediate in size, it cannot hâve anv taxonoinic meaning. 

 It is also difficult to believe, that it dépends upon âge, because I 

 hâve in other Cephaloplii seen the bullae of voung individuals be 

 subïequal to, or even somewhat longer than those ot adult or old 

 ones. It must thus be purely individual, but it is verv remarkable. 

 because the différence is so great. 



Cephalophus leucogaster Gray. 



A séries of skins of this species displays a certain variation. The 

 dark dorsal band mav be rather narrow and not attain greater 

 breadth than about 2 72 cm., as in a female from « province 

 orientale », or it mav spread diffuselv over the whole back as in a 

 maie with the same provenience. It is, however not, onlv the maies 

 which hâve such a broad dark area on the back. The same happens 

 also with females f. i. from Mawambi. Young spécimens are apt to 

 be darker than the old ones, being black on the back and from 

 there graduallv shading through various degrees of smoky blackish 

 to the palest shade of « otterbrown » (354.1) or still paler on the 

 belly. The colour on the flanks is onlv little relieved by narrow 

 buffish rings to the hairs. The hams are, however, light buff. The 

 forehead is smoky black, and some of the hairs of the tuft are tipped 

 with «mahogany». 



In the adult spécimens the colour on the sides of the black 

 dorsal band varies from « rust red » (318. i and 2) to smoky brown 

 with buffish rings to the hairs. The shading to the buifish white 

 belly is always graduai. The colour of the tuft can in spécimens 

 from the same locality, f. i. Mawambi, var y from « tawn » to black. 

 Usually the tuft is some shade of fawn or other reddish colour, 

 but the blaze darker, blackish or dark brown, but spécimens with 

 the blaze fawn coloured are also found f. i. in « province orientale » 

 as well as at Mawambi. 



One of the spécimens from the former locality (n" 200) just the one 

 with the narrow dorsal band, displays a very interesting pattern. 



