Besides Mr. Haggard’s skulls from Lamu, on which Thomas founded this species, and a head from the same place in Mr. Jackson’s private collection, there is in the National Museum the perfect skin and skull of a fine Oribi recently obtained in East Africa and presented by Mr. A. H. Neumann. No information as to its exact locality has as yet reached us, and as its skull differs somewhat from that of the Lamu _O. haggardi_, we are at present unable to form a definite opinion as to its specific identity. If, as seems probable, this interesting specimen is really referable to the present form, we may say that _O. haggardi_ is in general colour rather greyer than the other species, and that its tail has a decided black tuft at the end, the proximal part of this organ being white-edged below. To identify this specimen with the present species, however, will involve the recognition of a considerable degree of variation in the skull and horns, and without further material we are unable to do so definitely. _December, 1895._ GENUS III. RAPHICERUS. Type. _Raphicerus_, =H. Sm.= Griff. An. K. v. p. 342 (1827) R. CAMPESTRIS. _Calotragus_, =Sund.= Pecora, K. Vet.-Ak. Handl. 1844, p. 192 (1846) R. CAMPESTRIS. _Pediotragus_, =Fitz.= SB. Ak. Wien, lix. pt. 1, p. 163 (1869) R. CAMPESTRIS. Accessory hoofs present or absent. No naked glandular spots below ears or tufts on knees. Tail short. Skull stout and strongly built, with a short broad muzzle. Anteorbital fossæ small but deep, their edges rounded and unridged above and below. Horns nearly vertical, slender, scarcely ridged. _Distribution._ South and East Africa. The species we refer to this genus may be divided as follows:-- A. Accessory hoofs present. Fur profusely mixed with white. 46. _R. melanotis_ B. Accessory hoofs absent. Fur uniform in colour. _a._ S. Africa 47. _R. campestris_. _b._ Ugogo 48. _R. neumanni_ [Illustration: THE BOOK OF ANTELOPES, PL. XXVII. _Wolf del. Smit lith._ _Hanhart imp._ Fig. 1. The Steinbok. RAPHICEROS CAMPESTRIS. Fig. 2. The Grysbok. RAPHICEROS MELANOTIS. _Published by R·H·Porter._] 46. THE GRYSBOK. RAPHICERUS MELANOTIS (THUNB.). [PLATE XXVII. Fig. 2.] _Greisbock_, =Thunb.= Resa, ii. p. 12 (1789); English Transl. ii. p. 11 (1793).