“These Antelopes range over a very wide extent of country in both British and German East Africa. In the latter sphere I have procured specimens on the south shore of the Victoria Nyanza which in all respects were identical with those found nearer the coast; hence it is reasonable to suppose that they occupy the entire region lying between the lake and the coast. In British East Africa the northern limit of their extension seems to be somewhere about Lake Naivasha in the Masai country. On one occasion, however, I obtained an odd specimen in the valley of the Ngare Rongri, to the south of Lake Baringo, but, as a rule, they are not to be found so far north, as in this district they give place to _B. jacksoni_. [Illustration: Fig. 4 _c_. Horns of _Bubalis cokei_, front view. (Ann. Mag. Nat. Hist. ser. 5, xiv. p. 426.)] “Between Lake Naivasha and the coast _B. cokei_ is very commonly met with. It frequents every kind of locality, and is equally at home in the bush-covered wilderness lying behind the coast-line and on the vast treeless plains around the base of Kilimanjaro which extend northwards towards Lake Naivasha, and during the hottest seasons of the year it is often encountered in the most arid and pastureless localities many miles distant from the nearest water. “Being of a sociable disposition, Coke’s Hartebeest is usually seen in company with other game, and the sight of these vast mixed herds, which include Zebras and Grant’s and Thomson’s Gazelles, is one not easily forgotten. Like all Hartebeest it is very wary and difficult to approach, its senses of sight and scent being extremely keen. During the time that the herd is grazing there are usually one or two sentinels posted on the nearest elevations to give warning of the approach of danger. The white-ant-hills with which the entire country abounds are usually selected for this purpose, and are patronized to such an extent, that I have seen as many as eight or ten occupying the summit of one of these hills, which looked as if it could only support a third of that number. The reddish colour and general contour of these mounds bears in many cases so close a resemblance to the Antelopes themselves (particularly when grazing) that I have frequently been deceived by their appearance. “When alarmed they utter a few short whistling snorts and take to flight. If surprised suddenly in the bush they usually run a considerable distance before halting, but when the danger has been perceived from a distance in the open they run but a short distance at a time, pausing frequently to turn round and scrutinize the object of their alarm. In this case there are generally one or two bulls keeping at some distance in the rear of the herd, whose fatal curiosity will often delay them until they fall victims to the rifle.