And Ungalata Unguicijlata, terms originally applied by Ray to mammals, according as they possessed claws or hoofs, though Aristotle had made a similar division of quadrupeds, placing among unguiculates the monkeys, bats, carnivora, and rodents, and among the ungulates the pachyderms, ruminants, and solipeds (horse). Ray placed among unguiculates the camel, elephant, and edentates, as well as those above mentioned; Linnaeus followed Ray in his division of quadrupeds. This system has been variously modified by Cuvier, Swainson, Oken, C. L. Bonaparte, and Owen, the last restricting the unguiculates to the monkeys and carnivora, and the ungulates to the omnivora, ruminants, solipeds, and pachyderms. The ungulates are divided by Huxley into the two sections of perissodactyls or odd-toed, and artiodactyls or even-toed; the former including the rhinoceros, tapir, and horse, the latter the omnivorous pig and hippopotamus, and the ruminating animals. (See Mammalia, vol. xi., pp. 79, 80, and 82).