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Show 414 MR. O. THOMAS ON THE ANTELOPES [May 17, subject. In the same author's ' Knowsley Menagerie' figures of the majority of the species will also be found. The genus Cephalolophus is a remarkably uniform one, the species, while widely differing in size, colour, and other superficial characters, agreeing exceedingly closely with one another in all the more essential features. I have therefore no hesitation in placing them all under one single generic heading, with the synonymy as follows:- CEPHALOLOPHUS l. Type. Cephalophus, Ham.-Sm. Griff. Cuv. An. K. v. p. 344 (1827) G. sylvicultor. Cephalolophus (emend.), Wagner, Giebel, and other German authors C. sylvicultor. Sylvicapra, Ogilb. P. Z. S. 1836, p. 138 C. grimmii. Cephalophorus, Gray, List M a m m . B. M . p. 162 (1843) ... C. grimmii. Grimmia, Gray, P. Z. S. 1871, p. 589 '. . . C. grimmii. Terpone, Gray, P. Z. S. 1871, p. 592 C. sylvicultor. Potamotragus, Gray, Cat. R u m . B. M . p. 24 (1872) C. sylvicultor. Of this genus 18 species appear to deserve recognition, and of these the following is a synopsis:- A. Horns, when present, pointed directly backwards, in a line with, or below the line of, the nasal profile. Horns generally present in female. Ears moderate or short, rounded, their length much less than the distance from the eye to the nose. General colour fulvous, red, grey, or black, generally marked or striped. a. Size large : hind foot (without hoof) more than 280 mm.; basal length of skull more than 240. 1 See also the two following species, the position of which I have not been able to determine with certainty: - (1) Antilope quadriscopa, H a m . Sin. Griff. Cuv. An. K. iv. p. 261, pi. (animal) (1827). Hab. Senegal. The general appearance of this animal is more that of a Gazelle than a Cephalolophus, but the " narrow dark streak, not open but naked, between the eye and the noso" would seem to show that it is a member of the present genus. Its remarkable character of tufts on all the four limbs is rendered less improbable by the recent discovery of the heel-tufts in C. dorue (infra, p. 424). (2) Cephalolophus ruficrista, Bocage, P. Z. S. 1878, p. 744. Hab. W . Africa ; probably Angola. Only known from the head, which is like in general appearance to that of C. niger, but is decidedly larger. Horns rounded, but little roughened at base, placed in the line of the face. Dimensions.-Occiput to tip of muzzle 260 m m . ; eye to muzzle 140: length of horns 100. |
