2D0 On a neiv Duiker from West Africa. 



memory of the well-known authority on the Ungulata, Sir 

 Victor Brooke, from whose collection the specimens, come, I 

 have very great pleasure in na-ning it 



Cephahplius Broolcei, sp. n. 



Size slightly less than in C. Ogilhyi. General colour verv 

 much as shown in the figure of that animal in the 'Book of 

 Antelopes' (pi. xviii. fig. 2) ; in fact, I am convinced that 

 that figure, whicli was one of those prepared under Sir V. 

 Brooke's own directions, was taken from this animal. The 

 supraorbital dark and light lines are, liowever, too strongly- 

 marked, and the legs are too dark, these being uniformly 

 light to the hoofs in C. Brookei, while in C. Ogilbyi the 

 phalanges and front of the metapodials are black. Hairs of 

 middle line of nape reversed forwards for 3 or 4 inches, as in 

 C, Weynsi and Johnstom. Dorsal stripe deep black, mucii 

 broader than in C. Ogilbyi, about 2-2^ inches broad at its 

 widest point, not continued on to the tail, but terminating 

 3 or 4 inches short of the root of that organ, which has, how- 

 ever, in the young specimen only, a renewed dark line on its 

 upperside. Tail with a grizzled black-and-white terminal 

 tuft. 



The young specimen is in many respects darker than the 

 adults, having a black frontal patch, brown fore-quarters, and 

 dark limbs ; but the characteristic appearance of the dorsal 

 streak induces me to consider that it is probably associated 

 rightly with them. 



ftkull, as compared with that of C. Ogilhyi, rather smaller, 

 narrower across the orbital region, and without the marked 

 frontal convexity found in that species ; muzzle parallel- 

 sided, the nasals less broadened posteriorly; premaxillae 

 broadly articulating with sides of nasals ; anteorbital pits 

 shallow; median notch of palate broadly rounded, approxi- 

 mately level with the lateral ones; bulla? variable, those of 

 the male very much smaller than those of the female. 



Horns considerably smaller than those of O. Ogilbyi, 

 lying back in or below the general line of the face; those of 

 the male 73 millim. long, with a basal diameter of 2G millim., 

 these measurements being in the female 40 and 20. 



Dimensions of the type (stufted) : — 



Head and body 9U() millim.; tail 120; hind foot (s. u.) 

 195 ; ear 88. Height at withers 500. 



Skull: basal length (c.) 172; greatest breadth St; muzzle 

 to orbit 103; nasals 86x39; interorbital breadth 46; muzzle 



