The pouched animals are not entirely confined to the Australian island. The large island of New Guinea possesses some of them; and there are species in Java, and others of the Asiatic islands. America (both North and South) has the opossums, in numerous species; but it is in Australia, and the contiguous islands of Van Diemen’s Land and New Guinea, that we find both the genera and species in greatest numbers. These countries are, in fact, the head-quarters of the marsupial animals.
The true genera are not numerous, though the species of most of them are; and it is but natural to suppose that many new ones—both genera and species—will yet be discovered, when the vast terra incognita of Australia comes to be explored. In fact, every expedition into the interior brings home with it some new animal that carries a pouch!
As the opossums were the first of these animals whose habits became generally known to Europeans, we shall speak first of them; and it may be remarked, that although there are several species in the Australian countries resembling the true opossums, and are even called opossums, yet among naturalists the name is usually limited to the pouched animals of America.
The old writer, Lawson, gives as succinct an account of the habits of the best known species—the Virginia opossum—as may be found anywhere. We shall adopt it verbatim:—“The possum,” says he, “is found nowhere but in America. She is the wonder of all the land animals—being of the size of a badger, and near that colour. The female, doubtless, breeds her young at her teats, for I have seen them stuck fast thereto when they have been no bigger than a small raspberry, and seemingly inanimate. She has a paunch, or false belly, wherein she carries her young, after they are from those teats, till they can shift for themselves.
“Their food is roots, poultry, or wild fruits. They have no hair on their tails, but a sort of scale or hard crust, as the beavers have. If a cat has nine lives, this creature surely has nineteen; for if you break every bone in their skin, and smash their skull, leaving them quite dead, you may come an hour after and they will be quite gone away, or, perhaps, you may meet them creeping away. They are a very stupid creature, utterly neglecting their safety. They are most like rats than anything. I have for necessity, in the wilderness, eaten of them. Their flesh is very white and well-tasted, but their ugly tails put me out of conceit with that fare. They climb trees as the racoons do. Their fur is not esteemed or used, save that the Indians spin it into girdles and gaiters.”
Bating the exaggeration about their tenacity of life, and also the error as to their mode of bringing forth, the above account hits off the opossum to a nicety. Lawson might have added that their tails are highly prehensile, and are not only used for suspending them to the branches of trees, but also employed by the female for holding her young upon her back—in which fashion she often carries them about.
The flesh of the opossum is not only eatable, but much eaten, and even sought after as a delicacy both by negroes and whites.
It is surprising how the number of species of this animal has lately multiplied, under the research of naturalists. Perhaps no creature illustrates more forcibly the folly of setting limits to the species of animals, by simply trusting to the account of those known or described. Over thirty species have been found in America, of which five or six belong to the northern division of the continent. The tropical region is their head-quarters; but they are not confined to the torrid zone, since there are species existing everywhere, from Canada to Chili.
Another form of pouched animal that can scarcely be called an opossum is the Yapock of tropical South America. It is a smaller animal than the opossum, aquatic in its habits, and in fact approaches nearer to the family of the water-rats. Of this, too, there are several species.
Crossing to Australia we find the pouched animals, as already observed, of several different and very dissimilar genera.