MANUAL OF NATUKAL HISTOEY. 575 



The London clay produces an extinct genus allied 

 to the Peccary, the Hyracotherium ; and here, like- 

 wise, occurs a species of extinct bat, belonging to 

 the genus Molossus, from a bed of eocene sand in 

 Suffolk. The extinct, carnivorous genus, Hycenodon, 

 is from the lower tertiary of the Isle of Wight ; and 

 the small, marsupial Didelphys Colchesteri, is from 

 the sand at Kyson. A large mammal, related to 

 the water-mole (Paloeospalax) has been discovered 

 in a lacustrine deposit at Ostend ; arid the Trogon- 

 therium, a large extinct genus, allied to the Beaver, 

 in Russia. The Paris basin, the scene of the illus- 

 trious Cuvier's labours, has furnished numerous 

 extinct mammalian genera. The pachydermatous 

 Paloeotherium, with a short proboscis, like a tapir ; 

 the Anthracotherium, with a still shorter nose ; the 

 Lophiodon, with crested teeth ; and the Anoplothe- 

 rium, with only two toes on its feet, are among his 

 discoveries. From the quarries of Montmarle have 

 been procured three or four species of marsupials, 

 two or three of bats, and, among Insectivora, the 

 remains of a mole ; among Carnivora, several spe- 

 cies of bear, seal, cat, weasel, dog, and fox ; among 

 Rodents, ten or twelve species of beaver, rat, hare, 

 squirrel, and Lagomys ; besides bones of the great 

 thick-skinned Mastodon and Rhinoceros ; also the 

 horse, boar, and tapir, and the ruminant forms of the 

 elk, stag, antelope, and ox. The same vast cemetery 

 of organic remains has supplied us with a list of 

 eocene birds. Fossil genera of Raptores, as Halia- 

 etus, Buteo, and Strix ; species of the rasorial genus, 



