That of Sumatra has neither folds nor scutellae.

Its skin has a slight covering of hair, and a pair of horns gives it some resemblance to the two-horned species of Africa.
The natives of South Africa are acquainted with four distinct species of rhinoceros, to which they give distinct names; and it may be remarked that this observation of species by native hunters is far more to be depended upon than the speculations of mere closet-naturalists, who draw their deductions from a tubercle, or the tooth, or a stuffed skin.

If there be any value in a knowledge of animated nature, it is not to these we are indebted for that knowledge, but far oftener to the "rude hunters," whom they affect to despise, and who, after all, have taught us pretty much all we know of the habits of animals.

Such a "rude hunter" as Gordon Cumming, for example, has done more to increase the knowledge of African zoology than a whole college full of "speculating" _savans_.
This same Gordon Cumming, who has been accused of exaggeration (but in my opinion very wrongfully accused), has written a very modest and truthful book, which tells you that there are four kinds of rhinoceroses in Southern Africa; and no man is likely to know better than he.
These four kinds are known among the natives as the "borele," the "keitloa," the "muchocho," and "kobaoba." The two first are "black rhinoceroses,"-- that is, the general colour of their skin is dark--while the "muchocho" and "kobaoba" are white varieties, having the skin of a dingy whitish hue.

The black rhinoceroses are much smaller--scarce half the size of the others, and they differ from them in the length and set of their horns, as _well_ as in other particulars.
The horns of the "borele" are placed--as in all rhinoceroses,--upon a bony mass over the nostrils,--hence the word "rhinoceros" (_rhis_, the nose, _chiras_, a horn.) In the "borele" they stand erect, curving slightly backwards, and one behind the other.