So far as we know, the next example that reached Europe of the present species was that of an adult male received by the British Museum from Mr. F. J. Jackson in 1891, from which our figure (Plate XXXIX.) has been taken. This specimen was mounted and placed in the Mammal gallery, and named at first _C. vardoni_, and afterwards _C. kob_. Other examples of the same Antelope were subsequently received at South Kensington from Mr. Gedge, Capt. Lugard, and Mr. Scott Elliot, and referred to the Kob. Mr. Gedge’s specimens were obtained in Uganda, Capt. Lugard’s on the south-west coast of the Albert Nyanza, and Mr. Scott Elliot’s near the Albert-Edward Lake. In the autumn of 1895, Herr Oscar Neumann, the distinguished German traveller and naturalist, came to the British Museum for the purpose of examining the Mammals in the collection, and of comparing them with the specimens he had himself obtained during his journeys through German and British East Africa in 1892–5. Herr Neumann, who visited the Musée d’Histoire Naturelle at Paris for the same purpose, found during his researches at these places that the so-called “Kob” of East Africa was essentially different from the true Kob of Western Africa. Thomas in this country, and M. Poussarges in France, had also come to the same conclusion: Thomas from an examination of specimens of the true _Cobus kob_ recently obtained by Capt. Lugard on the Niger, and M. Poussarges from a comparison of a specimen of the present Antelope procured by M. Decle in Uganda with the original types of Buffon’s “Kob.” Herr Neumann therefore proposed to call the new Eastern species after Mr. Thomas, and designated as its type Mr. Scott Elliot’s specimen from Uganda, to which he affixed the specific name _thomasi_ in MS. But the preparation of Herr Neumann’s description was unfortunately delayed, and was not transmitted to the Zoological Society of London for publication until January 1896. In the meanwhile, Sclater, supposing from the delay that the description in question might have been sent to some periodical in Germany, had exhibited a mounted head of the same Antelope (obtained by Mr. E. Gedge on the eastern shores of Lake Victoria, as hereafter mentioned) and had given its name as “_Cobus thomasi_, Neumann, MS.” This, therefore, was actually the first publication of the species under its present name, and it may possibly be a moot point for experts in questions of priority whether Mr. Gedge’s specimen ought not really to be considered the “type.” It is satisfactory, however, that both the possible “types” are in the British Museum, so that no international complications can arise from such a controversy.