Our gypsum quarries in the neighbourhood of Paris are full of them. Bones of seven distinct species are found there. The first (_P. magnum_) is as large as a horse. The three next are of the size of a hog, but one of them (_P. medium_) has narrow and long feet, another (_P. crassum_) has the feet broader, and a third (_P. latum_) has them still broader, and especially shorter. The fifth species (_P. curtum_), which is of the size of a sheep, is much lower, and has the feet still broader and shorter in proportion than the last. The sixth (_P. minus_) is of the size of a small sheep, and has long and slender feet, the lateral toes of which are shorter than the rest. The seventh (_P. minimum_), which is not larger than a hare, has also the feet slender[268]. Palæotheria have also been found in other districts of France: at Puy in Valey, in strata of gypseous marl, a species (_P. velaunum_)[269], much resembling (_P. medium_), but differing from it in the form of its lower jaw; in the neighbourhood of Orleans, in strata of marly rock, a species (_P. aurelianense_)[270], which is distinguished from the others by having the re-entering angle of the crescent of its lower grinders split into a double point, and by some differences in the necks of the upper grinders; near Issel, in a bed of gravel or molasse, along the declivities of the Black Mountain, a species (_P. isselanum_)[271], which has the same characters as the Orleans species, but is of smaller size. It is more particularly, however, in the molasse of the Department of the Dordogne, that the palæotherium occurs not less abundantly than in our gypsum deposits in the neighbourhood of Paris. The Duke Decaze has discovered in the quarries of a single field, bones of three species which appear different from all those of our neighbourhood[272]. The _Lophiodons_ approach still somewhat nearer to the tapirs than the palæotheria do, inasmuch as their lower false grinders have transverse necks like those of the tapirs. They differ, however, from these latter, in having the fore ones more simple, the backmost of all with three necks, and the upper ones rhomboidal, and marked with ridges very much resembling those of the rhinoceros. We are still ignorant what the form of their snout, and the number of their toes, may have been. I have discovered not less than twelve species of this genus, all in France, deposited in marly rocks of fresh-water formation, and filled with lymneæ and planorbes, which are shells peculiar to pools and marshes. The largest species is found near Orleans, in the same quarry as the palæotheria; it approaches the rhinoceros. There is a smaller species in the same place; a third occurs at Montpellier; a fourth near Laon; two near Buchsweiler in Alsace; five near Argenton in Berry; and one of the three occurs again near Issel, where there are also two others. There is also a large one near Gannat[273].