There can be no doubt that, as stated above, _Gazella rufina_ is most nearly allied to _G. rufifrons_ of Senegal, from which, however, we have already stated its points of difference. Sir Edmund Loder has had a water-colour drawing of the typical specimen prepared by Smit, which has much assisted us in our study of it. It is obviously a larger and more richly coloured animal than _G. rufifrons_, and its skull, of which, by the kindness of the Zoological Society, we are enabled to give the figure that originally appeared in their ‘Proceedings’ (fig. 73, p. 168), is remarkable for its stout and heavy build and short nasal opening. The only conjecture we can make respecting this somewhat problematical species is that it may possibly be the same as _Gazella lævipes_ of Sundevall and Heuglin from North-east Africa, of which we have spoken in our article on _Gazella rufifrons_. It may be remarked that Sundevall, in his account of _Antilope lævipes_ (K. Vet.-Akad. Handl. 1845), has noted the existence, in the Paris Museum, of specimens from Algeria of a Gazelle which he considers identical with his species, form α (from Sennaar), and which he separates from form β (from Senegal) on account of the want of the blackish nose-spot. But even if such shall turn out eventually to be the case, the present species will still retain the name “_rufina_,”--“_lævipes_,” as we have already pointed out, being correctly treated of as a synonym of _G. rufifrons_. Sir Edmund Loder has most liberally presented the typical specimen of _Gazella rufina_ to the British Museum. _May,_ 1898. [Illustration: THE BOOK OF ANTELOPES, PL. LXVIII _J. Smit lith._ _Hanhart imp._ Thomson’s Gazelle. GAZELLA THOMSONI. _Published by R. H. Porter._] 99. THOMSON’S GAZELLE. GAZELLA THOMSONI, GÜNTH. [PLATE LXVIII.] _Gazella thomsoni_, =Günth.= Ann. Mag. N. H. (5) xiv. p. 427 (1884) (fig., horns); =Thomson=, Masai-land, p. 536 (1885) (fig., horns); =Hunter= in Willoughby, E. Africa, p. 289 (1889); =Ward=, Horn Meas. (1) p. 133 (1892), (2) p. 171 (1896); =True=, P. U.S. Nat. Mus. xv. p. 473, pl. lxxvii. (1892) (Taveta); =Lyd.= Horns and Hoofs, pp. 236, 239 (1893) (fig., horns); =Lugard=, E. Africa, i. p. 534 (1893); =Jackson=, in Badm. Big Game Shooting, i. pp. 285 & 298 (1894); =Scott Elliot=, P. Z. S. 1895, p. 340; =Matsch.= Säug. Deutsch-O.-Afr. p. 130 (1895); =Rhoads=, P. Ac. Philad. 1896, p. 519; =Jackson=, P. Z. S. 1897, p. 434.