This species of Ox, which is entirely new, appears to be the most nearly allied to our domestic cattle. Those ruminants which are classed under the generic name of Ox, may be very naturally divided into two distinct groups. The first includes the Buffaloes, animals in some measure aquatic, living in low, swampy localities, or near rivers, in which they remain half immersed a great part of the day; having broad-based horns, partly spreading over their foreheads, flat on their internal side, and round on their external; tongue soft, &c. The second is that of the Ox, properly so called. These are distinguished from the first by their dwelling on more elevated lands, or in the vicinity of forests; having smooth round horns, without enlargement at their base; tongue covered with horny papillae, &c. It is to this second family, consisting of the American Bison, the Aurox, the Yak, and the domestic Ox, with its varieties, that the Jungly Gau undoubtedly belongs. It however differs from the first two in being entirely destitute of the thick shaggy mane; and, instead of the long silky hair of the third, it is clothed with close, short hair, equal in uniformity of texture to the sleekest of our domestic cattle. To judge from its general appearance, we might be even tempted to take it for a mere variety of the domestic species, so close is the resemblance. But the information furnished by M. Alfred Duvaucel, in the only description which has been given, leaves no doubt as to its being a new species. The following is M. Duvaucel's account:--"The horns of the Jungly Gau rise from the sides of the occiput, first outward, then forward, with a slight inclination backward of the upper extremity, forming a double lunation, and separated by a space which gradually diminishes as the animal grows older; standing equally apart in every individual of the same age and sex; are round, except at their base, which is slightly compressed; and they become smoother as the animal advances in age. "The hump, which is characteristic of the generality of Indian oxen, is reduced in this to a slight prominence, extending to the middle of the back, and is covered with a grayish, woolly hair, rather longer than that on the other parts of the body, which spreads likewise over the occiput and the front. The rest of the hair is black except the legs, which are white from the knees downwards. The tail terminates in a large tuft of hair; and, in bulls of two or three years old, the under part of the neck is slightly furnished with long, black, silky hair. "The female is smaller than the male, with horns of a still less proportionate size. The front of the head, instead of being convex, as in the male, appears to be slightly depressed, in consequence of the superior elevation of the muzzle. The colour of the female is not so deep a black; the gray on the top of the neck and the shoulders extends to the sides, and the inferior part of the muzzle is white.