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Show 1892.] OF THE GENUS CEPHALOLOPHUS. 419 of which I have as yet seen no specimen. It is evidently allied to C. natalensis, but may readily be distinguished by its much greater size. 4. CEPHALOLOPHUS NATALENSIS, Sm. Cephalophus 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:- c? . Short, conical, much thickened at their bases ; their greatest basal diameter going about 2| times into their length ; length about 70 m m . in an old specimen. $. Similar to male, but smaller, slenderer, and more sharply pointed. 37 m m . in length. Skull: frontal region markedly roughened and convex: anteorbital fossae of medium depth, their bottoms 14 m m . 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.- $. Height at withers 450 ; length of ear 63; hind foot 193. Skull (S)-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. Cephalophus nigrifrons, Gray, P. Z. S. 1871, p. 598, pi. xlvi. Cephalophus 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 m m . 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 m m . 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 fossae of medium depth, their bottoms about 16 m m . from each other. Median posterior palatine notch some distance (7 m m . in type) in front of the level of the lateral notches. Dimensions.- 6 • Approximate height at withers 500 ; ear 60 ; hind foot 235. |