To these four first species, or races of antelopes, may be added two other animals, which greatly resemble them; the first is called _koba_ at Senegal where the French have stiled it the _great brown cow_; the second is also a native of Senegal, and is there called _kob_, but our countrymen denominate it the _small brown cow_. The horns of the kob greatly resemble those of the gazelle and kevel, but the shape of the head is different, the muzzle is longer, and there are no pits under the eyes. The koba is much larger than the kob; the latter is about the size of the fallow-deer, and the other is as large as the stag. From the remarks of M. Adanson, it appears that the _koba_ is five feet long, from the extremity of the muzzle to the insertion of the tail; that its head is fifteen inches, its ears nine, and its horns from nineteen to twenty, that its horns are flattened on the sides and surrounded with ten or twelve rings, while those of the _kob_ have only eight or nine, and are not more than a foot in length. The seventh animal of this species is found in the Levant but more commonly in Egypt, and in Arabia. We call it, from its Arabian name, _algazel_; it is shaped pretty much like the other antelopes, and is nearly the size of the fallow-deer, but its horns are long, thin, and but little bent till toward their extremities, when they turn short with a sharp flexion; they are black and almost smooth, and the annular prominence scarcely observable, except towards the base, where they are a little more visible. They are about three feet in length, while those of the gazelle are not more than one foot, those of the kevel fourteen and fifteen inches, and those of the corine (which, nevertheless resembles this the most) only six or seven inches.