The “_Capra gazella_” of the tenth and twelfth editions of Linnæus’s ‘Systema Naturæ’ has been held by many authors to refer to this species, whereas Pallas and his followers called the Leucoryx “_Antilope gazella_” and the present species “_Antilope oryx_” Modern writers have mostly called the Gemsbok either “_Oryx capensis_, Ogilby” (a name that is undoubtedly applicable to it), or “_Oryx gazella_” or “_Oryx oryx_” Of these three names we think we are justified in selecting the Linnæan “_gazella_” which has undoubted priority. It is true that Linnæus’s species is based mainly on Ray’s very imperfectly described “_Gazella Indica cornibus rectis longissimis nigris_,” and that its “habitat” is given as “India.” But Pallas himself quotes Linnæus’s _Capra gazella_ as a synonym of his “_Antilope oryx_”—so that we cannot justly use the latter term even if it were not the same as the generic name. It may also be urged that traditionally at least Linnæus’s term “_gazella_” has usually been acknowledged to refer to this species, which we therefore propose to designate _Oryx gazella_. As may be gathered from what has been already stated, most of the older authors had no clear ideas as to the differences between this and the two preceding Antelopes, which they only knew from imperfect specimens, and did not even realize that their areas of distribution are in every case perfectly distinct. We must, however, make one exception from this statement. In the Dutch edition of Buffon’s ‘Histoire Naturelle,’ published by Schneider at Amsterdam, to which we have had occasion more than once to refer, there will be found a very recognizable figure of the Gemsbok, which the author identifies, perhaps correctly, with the “Pasan” of Buffon. Allamand’s figure was taken from a skin received from the Cape of Good Hope, and is accompanied by a full and fairly accurate description. Both the figure and description of Allamand were reprinted by Buffon in the sixth volume of his ‘Supplement’ to the ‘Histoire Naturelle,’ published at Paris in 1782. Allamand’s figure was again copied by Schreber on plate cclvii. of his ‘Säugethiere,’ which is believed to have been issued (long before the letterpress) in 1784. It is there named “_Antilope oryx_, Pallas,” as is also the case in the accompanying letterpress, issued in 1836, and in Wagner’s supplementary volumes of the ‘Säugethiere,’ in which the plate of this Antelope, published in 1848, is apparently also an improved copy of Allamand’s original figure.