In the British Museum there are frontlets of one female and two male specimens of the Derbian Eland, obtained at the Gambia by the same collector (Whitfield) and presented by Lord Derby. In the same collection there is a flat skin brought home by Winwood Reade, and the head of a female, dried with the skin on, obtained by Dr. Percy Kendall on the Gambia. The material available not being, in our opinion, sufficient for the preparation of a correct figure of the Derbian Eland, we have thought it best, as our illustration of this Antelope, to copy, on a reduced scale (Plate C.), the original figures of the Derbian Eland drawn by Waterhouse Hawkins for plate XXV. of the ‘Gleanings.’ We admit, however, that these are by no means satisfactory, for the head and legs of the specimens from which the figures were taken are absent, and the details as to these parts in the figures were probably filled up from conjecture. Wolf’s figure of the head of Reade’s specimen in the ‘Proceedings’ is, no doubt, more accurate, but in this example the legs are likewise deficient. _April_, 1900. APPENDIX. LIST OF THE SPECIES AND SUBSPECIES OF ANTELOPES DESCRIBED AS NEW DURING THE PROGRESS OF THIS WORK. Genus BUBALIS. (Vol. I. p. 5.) Bubalis neumanni. _Bubalis neumanni_, =Rothschild=, Ann. & Mag. N. H. ser. 6, xx. p. 376 (1897). Mr. Rothschild has based this species upon two skulls with horns, of male and female, and parts of a skin obtained by Mr. A. H. Neumann on the east shore and to the north-east of Lake Rudolf. He describes it as follows:— “The horns of this species differ widely from those of _Bubalis major_ (Blyth), of West Africa, and _B. buselaphus_ (Pall.), of Northern Africa and Arabia, in being slenderer and in their tips being inverted, instead of pointing outwards or straight behind. The nearest ally seems to be _B. tora_ (Gray) of Upper Nubia, Abyssinia, and Kordofan, which, however, has more slender horns, with more distinct rings, reaching almost round, a broader forehead, and a generally paler coloration. The horns also diverge much more in _B. tora_, as shown at a glance by the distances between the tips of the horns, as recorded in R. Ward’s ‘Horn Measurements.’ “The horns of _B. neumanni_ measure as follows:— “Circumference at base, ♂ 273 millim., ♀ 183; total length along the curves, ♂ 420, ♀ 345; tip to tip, ♂ 206, ♀ 249. “The rings of the horns are not very prominent and do not reach all round. “Breadth of skull at forehead, ♂ 100 millim., ♀ 80; length of skull from base of horn to upper lip, along the side in a straight line: ♂ 430, ♀ 403 millim.