The _Megatherium_ unites a part of the generic characters of the armadilloes, with some of those of the sloths, and is in size equal to the largest rhinoceros. Its claws must have been of a monstrous length, and prodigious strength; its whole skeleton possesses an excessive solidity. It has only as yet been found in the sandy strata of North America[326]. The _Megalonyx_ has been very similar to it in its characters, but has been somewhat less; its claws much longer and sharper in the edges. Some bones and entire toes of it have been found in certain caves in Virginia, and in an island on the coast of Georgia[327]. These two enormous edentata have only hitherto presented their remains in America; but Europe possesses one of the same class which does not yield to them in magnitude. It is only known by a single terminal joint of a toe, but this fragment is sufficient to assure us that it was very similar to a pangolin or manis, but to a pangolin of nearly twenty-four feet in length. It lived in the same districts as the elephants, rhinoceroses, and gigantic tapirs; for its bones have been found along with theirs in a sandy deposit in the county of Darmstadt, not far from the Rhine[328]. The osseous brecciæ also contain, but very rarely, bones of carnivora[329], which are much more numerous in caverns, that is to say, in cavities wider and more complicated than the fissures or veins containing osseous brecciæ. The Jura chain in particular, is celebrated for them in the part of it which extends into Germany, where, for ages past, incredible quantities have been removed and destroyed, on account of certain medical virtues which had been attributed to them, and yet there still remains enough to fill the mind with astonishment. The principal part of these remains consists of bones of a very large species of bear (_Ursus spelæus_), which is characterised by a more prominent forehead than that of any of our living bears[330]. Along with these bones are found those of two other species of bear (_U. arctoideus_ and _U. priscus_)[331]; those of a hyena (_H. fossilis_), allied to the spotted hyena of the Cape, but differing from it in the form of its teeth and head[332]; those of two tigers or panthers[333], of a wolf[334], a fox[335], a glutton[336], as well as of weasels, viverræ, and other small carnivora[337]. Here, also, may be observed that singular association of animals, the species resembling which live at the present day in climates so widely separated from each other as the Cape, the country of the spotted hyena, and Lapland, the country of our present gluttons. In like manner we have seen in a cave in France, a rhinoceros and a reindeer by the side of each other.