"In the course of this summer (1838), Mr. Cross, of the Surrey Zoological Gardens, received from Sierra Leone, under the name of the _Bush Cow_, a specimen which serves more fully to establish the species. It differs from the Buffalo and all other oxen in several important characters, especially in the large size and particular bearding of the ears, and in being totally deficient in any dewlap. It also differs from the Buffalo in its forehead, being flatter and quite destitute of the convex form which is so striking in all the varieties of that animal. "Mr. Cross's cow is, like the head in the Museum, of a nearly uniform pale chesnut colour. The hair is rather scattered, and nearly perpendicular to the surface of the body. The legs, about the knees and hocks, are rather darker. The ears are very large, with two rows of very long hairs on the inner side, and a tuft of long hairs at the tips. The body is short and barrel-shaped, and the tail reaches to the hocks, rather thin and tapering, with a tuft of long hairs at the tip. The chest is rounded and rather dependent, but without the least appearance of a dewlap; and the horns nearly resemble those of the Museum specimen, but are less developed, from the sex and evidently greater youth of the animal. The Rev. Mr. Morgan informs me that the animal is not rare in the bush near Sierra Leone. "I have added a slight sketch of Mr. Cross's animal, which I hope will enable any person to distinguish this very distinct and interesting addition to the species of this useful genus." The engraving at the head of this article is a reduced copy of Mr. Gray's figure just alluded to. The following representation of the head is from a specimen in the British Museum. [Illustration] THE MUSK OX. _Bos Moschatus._ [Illustration] The Musk-ox, in its external appearance, more nearly resembles the Yak of Thibet than any other member of the Bos genus; and they both inhabit mountainous districts near regions of perpetual snow. The horns of the Musk Bull are remarkably broad at their bases, which are closely united; they bend down on each side of the head, with an outward curve turning upwards towards their ends, which taper to a sharp point. They are two feet long measured along the curvature, and two feet in girth at the base; the weight of a pair of these horns is sometimes sixty pounds. The broad base of the horn is hollow on the inside, and of a form approaching to a square; when this is separated from the head and the other part of the horn, it forms a convenient dish, which is very generally used by the native Esquimaux for many domestic purposes. The horns of the cow are nine inches distant from each other at the base, and are placed exactly on the sides of the head; they are thirteen inches long, and eight or nine inches round at the base.