I have kept the Kangaroos to the last: not that they are the least interesting, but because these very singular animals are now so well-known, and their habits have been so often described, that it seems almost superfluous to say a word about them. I shall content myself with observing that the genus of the kangaroos has been divided into two sub-genera, the true Kangaroos, and those known as Kangaroo Rats. The difference, however, is not very great, since the rats are as mild and inoffensive in their habits as the kangaroos themselves. Of the kangaroo rats there are several species; but when we arrive at the true kangaroos we find a list altogether too numerous to mention. They are of all sizes, too, from that of the great giant kangaroo, that stands, or rather squats, full five feet in height, down to little tiny creatures not bigger than rabbits or squirrels. There are nearly fifty species in all inhabiting the known parts of the Australasian islands. It may be remarked, in conclusion, that two or three other kinds of pouched animals, differing from all the foregoing, have been lately brought to light by recent explorers; but, since nothing certain has been ascertained in regard to their habits, it would be idle in this place even to mention their names. CHAPTER TWENTY FOUR. ANT-EATERS, ARMADILLOES, AND OTHER ODD ANIMALS. This is, perhaps, the most interesting of the groups--interesting on account of the singular animals which compose it, every one of which may be termed an odd creature. In a strictly natural classification these animals would not come together, since many of the species are unlike the others both in appearance and habits; but in a scientific point of view the absence of incisor teeth has caused them to be ranged together in a group, known as the _edentata_, or toothless animals. In this group we shall give the first place to the true ant-eaters, and first speak of the ant-eaters of America. Of these there are four well-known species, the great Ant-bear, or Tamanoir; the Tamandua, or little Ant-bear; another little ant-bear, the Ringed Tamandua; and a very small species that differs much from the other three. They are all inhabitants of tropical America, and there are varieties of them in different districts. The Tamanoir is by far the largest, often attaining the size of a Newfoundland dog; and the long hair which covers its sides, together with its immense bushy tail, give to it the appearance of being much bulkier than it is. Its habits are tolerably well-known, constituting a very curious chapter in natural history which we have not space to give. Suffice it to say that its food consists entirely of ants and termites, which of themselves form a strange feature in the zoology of tropical countries. These it eats--not with teeth, but by means of its long slimy tongue, by which it is enabled to draw into its mouth hundreds of the little creatures at a time.