French wolves are generally browner and smaller than those of Germany; and the wolves of Russia, Sweden, and Norway are still stronger animals, and of a more sinister appearance. These differ very much in colour, which in winter is almost white. Again, the Alpine wolves are smaller than the French, and of a brownish-grey colour; while those of Italy and Turkey have a yellowish tinge. Black wolves are not uncommon, especially in the Pyrenees of Spain; but whether these, as well as the others, are all mere varieties of the common wolf, or whether there are two or three distinct species of European wolf, are questions to be left to the disputation of systematic naturalists. Over all the continent of America, from the Arctic shores in the north to Tierra del Fuego in the south, wolves are found; and here again there are varieties in size, colour, and even habits, that may fairly entitle the different kinds to rank as separate species. Most certainly there are distinct species, for that known as the Prairie Wolf, and also the Coyote of Mexico, are two kinds that more resemble jackals than real wolves. Besides, other wolves of the American continent, as the Brown Wolf of Mexico, the great Dusky Wolf of the Upper Missouri, the Aguara Dog of South America, the Wild Dog of the Falkland Islands, the Fox Wolves of Patagonia and Terra del Fuego, the Guazu of Paraguay and Chili, and the North American Common Wolf--are all animals of such different appearance and habits, that it is absurd to term them varieties of the same species. In Asia we have just the same series of varieties--that is, in every part of the great continent is found some representative of the tribe, which in reality is no variety, but an original and indigenous animal of the wolf kind--such as the Sandgah, or Indian wolf of the Himalayas; the Beriah, another Indian wolf; and the Derboom, a black species that inhabits the mountains of Arabia and Syria. In Africa the wolf is represented by the hyenas, of which there are at least four species--one of them, the common hyena, belonging to the northern half of the African continent, and extending its range into several countries of Asia. At the Cape, and northward into Central Africa, three large species of hyena, and one small one (the Aard wolf), represent the lupine family. The Jackal, too--of which there are several distinct kinds in Asia and Africa--is only a wolf of diminutive size and gregarious habit. This creature is fairly represented in America by the Coyote of Mexico, and the Barking Wolf of the prairies; and in Asia, upon the steppes of Tartary, by the Corsac. Even in Australia, where new mammalia have turned up in such odd and fantastic forms, the wolf has his congener in that curious creature known as the Tasmanian wolf.