“The _Aoul_ weighs about the same as the Gerenúk, but has a shorter neck and a more clumsy-looking head, and is altogether a coarser animal. It is a grass-feeder, and lives in the open plains or in scattered bush, and never in thick jungle, and prefers tolerably flat ground. The white hind-quarters can be seen from a great distance, making a herd of _Aoul_ look like a flock of sheep in the haze of the plains. I have never seen them in the cedar-forests on the top of Gólis, but in the hartebeest-ground to the south they are common. They are often met with in large herds along with the hartebeests, and are very common all over the Haud and Ogádén and near the Webbe. “They are, I think, the most stupid and easy to shoot of all the Somáli Antelopes, and their habits are identical with those of the Indian Blackbuck, but they are not equal to it in beauty and grace of movement. _Aoul_ often make long and high jumps when going away, presumably to look over the backs of the others; they look something like specimens of the Cape Springbuck which I have seen in England. I have never observed them spring vertically to a great height, as the Indian Blackbuck does. They are inquisitive like the Hartebeests, and will follow a caravan in the open, and if fired at they make off across the front, stretching themselves out at racing speed, and drawing up in a troop now and then to gaze.” Captain R. H. Light, of the Indian Staff Corps, who visited Somaliland in 1891, and has kindly furnished us with some field-notes on its Antelopes, writes that this Gazelle is found there in couples, and also in herds of fifty or more, and generally frequents plains with slight coverts. They are not usually difficult of approach, and out of a large herd he has shot four, one after the other, within a mile of ground, the herd moving off at every shot, but allowing him to approach again. At 150 yards distance or so Capt. Light says it is very hard to distinguish a buck from a doe of this Antelope, the size of the body being the same, and the slight differences in the thickness of the horns and neck being hardly perceptible. Their gait is longer and slower than that of Pelzeln’s Gazelle, but still not awkward like that of the “Gerenuk” (_Lithocranius walleri_). Mr. F. Gillett, F.Z.S., who accompanied Dr. Donaldson Smith during the first portion of his journey to Lake Rudolph, and made other expeditions in Somaliland, has favoured us with the following notes on this species:--