526 



MANUAL OF ZOOLOGY 



mammals, which, when the fossil forms are left out of 

 account, are capable of being arranged in nine orders : — 



i. Edentata, comprising the sloths, ant-eaters, and arma- 

 dillos. 



2. Cctacea, including the whales, porpoises, and dolphins. 



3. Sirenia, or dugongs and manatees. 



4. Ungnlata, a very large order, comprising among others, 

 the horses, tapirs, and rhinoceroses, the ruminants (camels, 

 oxen, sheep, goats, antelopes, giraffes, and deer), the pigs 

 and hippopotami, the hyraxes, and the elephants. 



Fig. 314. — Duck-bill {Or7iithorhynchus anatiuus). (After Vogt and Specht.) 



5. Carnivora, or the cats, dogs, bears, weasels, and otters, 

 and the seals and walruses. 



6. Rodentia, a large order, including, among many others, 

 the rats and mice, hares and rabbits, squirrels, beavers, and 

 porcupines. 



7. Insectivora, including the moles, shrews, and hedge- 

 hogs. 



8. Chiroptera, or bats, and fruit-eating bats (flying foxes). 



