1892.] OF THE GENUS CEPHALOLOPHUS. 419 



of which I have as yet seen no specimen. It is evidently allied 

 to G. natalensis, bnt may readily be distinguished by its much 

 greater size. 



4. Cephalolophus natalensis, Sm. 



Gephalophus natalensis, A. Smith, S. Afr. Q. J. i. p. 113(1834). 



Size rather small. Form slender. Colour bright rufous chestnut 

 all over, without marks or stripes of any kind, except that there is 

 a faintly marked red superciliary line. Back of neck greyish brown. 

 Chin and throat whitish. Tail slender, rufous at base ; brown, 

 tipped with white, at its extremity. 



Horns set parallel to nasal profile : — 



S . Short, conical, much thickened at their bases ; their greatest 

 basal diameter going about 2k times into their length ; length about 

 70 mm. in an old specimen. 



5 . Similar to uiale, but smaller, slenderer, and more sharply 

 pointed. 37 mm. in length. 



Skull : frontal region markedly roughened and convex : ante- 

 orbital fossae of medium depth, their bottoms 14 mm. in a male, 12 

 in a female, distinct from one another ; edge of median posterior 

 palatal notch but little anterior (3 or 4 mm.) to the lateral notches. 



Dimensions. — 5 . Height at withers 450 ; length of ear 63; hind 

 foot 193. 



Skull (c?) — basal length 150; greatest breadth 77; orbit to 

 gnathion 85 ; nasals, length 64, greatest breadth 36 ; muzzle 56 ; 

 upper molar series 50. 



Range. Eastern and South-eastern Africa, from Zanzibar to 

 Natal. 



5. Cephalolophus nigrifrons, Gray. 



Gephalophus nigrifrons. Gray, P. Z. S. 1871, p. 598, pi. xlvi. 



Gephalophus aureus. Gray, Ann. Mag. N. H. (4) xii. p. 42 

 (1873). 



Size medium. Colour of body rich chestnut, scarcely or not at 

 all paler below. Centre of face and crest deep black, contrasting 

 markedly with the rufous superciliary streaks. Nape browner. 

 Feet and tip of tail blackish, a few white hairs in the terminal tuft 

 of the latter. Hoofs apparently longer in proportion than usual; 

 lower edge of the posterior outer one 40 mm. in length. 



Horns, judging only from the cores, decidedly short, and but 

 little expanded at their base ; the cores in an adult male about 48 

 mm. long. Their set parallel to, and a little below, the level of the 

 nasal profile. 



Skull with the frontal region decidedly convex. Muzzle rather 

 narrow and elongated. Anteorbital fossse of medium depth, their 

 bottoms about 16 mm. from each other. Median posterior palatine 

 notch some distance (7 mm. in type) in front of the level of the 

 lateral notches. 



Dimensions. — J . Approximate heisht at withers 500 ; ear 60 ; 

 hind foot 235. 



