KUNGL. SV. VET. AKADEMIENS HAHTDLINGAR. BAND 58. N:0 2. 89 



? Cephalophus johnstoni Thomas, 



A young J* only with milk-dentition from Beni, Aug., Sept. 1914. 



C. johnstoni was described^ on a single young specimen from Toro, east of Ruwen- 

 zori, which still seems to be the only known in existence. The principal characteristics 

 by which it should be distinct from C. weynsi, with which it shares the reversal of the 

 hairs of the nape, should be its thicker fur, and much darker general colour. The first 

 of these characteristics is found in this specimen as well, but as it is a juvenile feature, 

 it does not prove very much. The second characteristic holds also good perhaps in too 

 high a degree as the dark shining brown extends not only over the hind quarters, but also 

 over the whole back almost to the root of the tail. The flanks and hams are not »deep 

 reddish russet » but rather »burnt umber » (Dauthejtay, 304, 1). With our present know- 

 ledge it is impossible to say, whether this is a perhaps somewhat melanistic young of 

 Cephalophus weynsi, or of C. johnstoni. 



Cephalophus claudi mixtus n. subsp. 



1 ? from Beni, Aug., Sept. 1914. 



»En Kiswahili Bengele» Capt. Arrhenius has written in his diary. 



There is no doubt about a close relationship existing between this Duiker from 

 Beni and C. claudi Thomas & Wroughton from BambUi, Welle Basin, but as there are 

 several differences noted below which are the more important as the type of C. claudi 

 also was an adult female, I think it most correct to distinguish this form with a third, 

 subspecific name. 



The general body colour is chestnut rufous on the fore quarters, gradually passing 

 through »btirnt sienna » (DAUTHENAy, 320, 2) on the posterior back to »rustred» (318, l)on 

 the hams. A broad black blaze on the face from the muffle, including the tuft and still 

 extending over the nape some way on the upper neck, where it gradually dissolves in the 

 black sprinkling, which is to be seen over the fore-quarters. On the sides of the black 

 blaze above and behind the eye there are many white hairs. A rufous superciliary band 

 bqfders sharply the black blaze. Another rufous band goes through the glandular region 

 to below the eye; the upper lips browner. Chin pale rust red. Throat and sides of neck 

 rufous much mixed with white hairs; many scattered white hairs are to be seen on the 

 shoulders as well. White hairs are still more numerous on the flanks where they decidedly 

 are in majority but mostly covered by the longer red hairs. From the chest to the navel 

 a blackish median band. The fore-legs are brownish black to the elbow, where the dark 

 colour gradually dissolves in the black sprinkling of the shoulders, and on the inner side 

 of the fore-legs a stripe of the body colour extends to the carpal joint. The hind feet are 

 only blackish a little above the hoofs, but there is a broad black patch on the heel, 

 and from there a narrow dark stripe runs down on the posterior side of the foot to the 

 lateral hoofs, and another similar, but shorter stripe is found on the outer part of the 

 front-side of the lower metatarsus. The tail is similar to that of the typical C. claudi, 



1 Proc. Zool. Soc, London 1901, p. 89. 

 K. 8v. Tet. Akad. Handl. Band 58. N:o 2. 12 



