The Solidungulæ (or Solid-hoofed), which roam among the wide pasturages of the Tropical regions of the Ancient World, contrast, by the elegance of their forms and the beauty of their clothing, with the unwieldy Pachyderms, of rugged and swarthy hide, placed by Cuvier under the same classification. The Wild Horse does not exist in these latitudes, though we may find there the most beautiful species of the genus: the Hémione, the Onagra, the Zebra, the Daw, and the Quagga. The _Hemionus_ ("half-ass"), which we are endeavouring to acclimatize in Europe, and numerous specimens of which may be seen in the Zoological Gardens of London and Paris, is of a clear brown colour all over the body, except the belly and legs, which are white. His mane is short, and his tail garnished only with a tuft of hairs at the extremity. The species is Asiatic, and appears to have originated in India, whence it spread westward into Asia Minor, and northward into the Steppes which stretch to the base of the Himalayas. The modern names are _Koulem_, _Kiang_, and _Dziggethai_ (or "Mountain Ass"). He roams in great troops across the dreary Asiatic deserts, and is fond of bitter and saline herbage, and brackish water. Now, as of old, he has "the range of the mountains for his pasture," and the "salt places" for his dwelling. His swiftness and wariness render his chase an exciting pastime, and in Persia he is considered the noblest of game. The _Hemippus_ ("half horse"), a species closely allied to the Hemionus, is a native of the fertile districts of Syria and Arabia. Another species, the _Tarpan_, roams the Steppes of Tartary, and is with great difficulty tamed to the use of man. He is of a reddish colour, but the mane and tail are black, and along the back runs a black stripe. The _Onagra_, _Onager_, or Wild Ass of Tartary, is represented in Abyssinia by a smaller variety, of very graceful form, whose hide exhibits already, upon the legs, some of those well-defined stripes which so magnificently adorn the "outer vestment" of the Quagga, the Daw, and, especially, the Zebra.