Mr. Sharpe’s skin of this Antelope reached Sclater along with others forwarded by Mr. Crawshay, and furnished the materials for the description of the new species which was read by Sclater before the Zoological Society in November 1893. Sclater proposed to call the new Waterbuck after Mr. Crawshay, who was its first discoverer, and who, besides this, has written a series of excellent field-notes on the Antelopes of Nyasaland[7]. A letter subsequently received by Sclater from Mr. Crawshay contained the following remarks on his new discovery:--“Amongst the specimens sent to you the Waterbuck perhaps most interests me, as I fancy it must be of a new species. It most resembles _Cobus ellipsiprymnus_--the Common Waterbuck of Nyasa and Southern Africa--and may be termed the Waterbuck proper of Mweru. It is the ‘_Chuzwi_’ of the Awemba and the people of Itawa and Kabwiri, as opposed to the much more common and numerous red Vardon’s Waterbuck (_Cobus vardoni_), which is known by the same people as ‘Sayula.’ “In make and shape the Mweru buck is quite similar to _C. ellipsiprymnus_, and has the same shaggy coat and powerful ovine scent, but in size it is a trifle smaller, and in habits apparently it is rather different. “In colouring and marking there exists a very appreciable difference, especially in the marking. The back and flanks of the Mweru species are of dark steel-blue, verging almost on black. The face, knees, hocks, fetlocks, and coronets of the feet are quite black--a glossy coal-black. Over the rump the broad crescent-shaped band of white found in _C. ellipsiprymnus_ is absent, the bluish black on the rump gradually toning down into dirty grey at the root of the tail and between the haunches. “Thus ‘Kringgat,’ the name by which the Dutch of Southern Africa know the Waterbuck, would not be characteristic of the Mweru animal. “In the case of _C. ellipsiprymnus_ running from one, the white band over the rump is so conspicuous a feature as to catch the eye in itself, and draw attention to the form of the animal disappearing between the trunks of trees, where otherwise in many instances it would escape notice. But with the Mweru Waterbuck running from one, the absence of the white band is at once apparent. I noticed the deficiency before even examining a specimen at close quarters. “The ‘Chuzwi’ of Mweru is not very plentiful in either Itawa or Kabwiri; all told, during the year I was at Mweru, I doubt if I saw fifty, though of Vardon’s Waterbuck I saw many thousands. It is generally met with in hilly forest country--sometimes on steep rough ground--where Vardon’s Waterbuck does not go, and where one would scarcely expect to see _C. ellipsiprymnus_. “I once came upon a troop of five females on the very topmost ridge of the mountains overlooking the Lualaba River--at the most northern point of Mweru Lake--where there were ‘Klipspringers,’ and where climbing with a rifle was anything but easy.