MAMMALIA. 



487 



We thus divide the class Mammalia into three sub- 

 classes : — (i) Prototheria^ (2) Metatheria and (3) Eutheria, 



The three sub classes are divided into orders and sub- 

 orders. The extinct forms are in italics : — 



ORDERS. 



SUB-ORDERS. 



1. Monotremata. 



2. Allotheria. 



Duckmole, Echidna. 

 Microlestes, Plagiaulax. 



5 3. Polyprotodon- 



4. Diprotodontia. 



Banded an teat er, bandicoot. 

 Tasmanian wolf, opossum. 



Kangaroo, phalanger, wom- 

 bat. 





5. Edentata. 



6. Sirenia. 



7. Rodentia. 



8. Tillodontia. 



9. Ungulata. 



10. Cetacea. 



11. Camivora. 



12. Insectivora. 



13. Chiroptera. 



14. Primates. 



1. Xenarthra. 



2. Nomarthra. 



T. Duplicidentata. 

 2. Simpiicidentata. 



1. Hyracoidea. 



2. Amblypoda. 



3. Proboscidea. 



4. Condylarthra. 



5. Perissodactyla. 



6. Artiodactyla. 



1. Odontoceti. 



2. Mystacoceti. 



1. Fissipedia. 



2. Pinnipedia. 



1. Insectivora Vera. 



2. Dermoptera. 



1. Micrcchiroptera. 



2. Macrochiroptera. 

 Lerauroidea. 

 Anthropoidea. 



Anteater, sloth, armadillo. 

 Aard-vark, pangolin. 



Manatee, dugong. 



Rabbits, hares, and picas. 



Porcupine, guinea-pig, chin- 

 chilla, squirrel, beaver, 

 rat, mouse, pouched-rat. 



Tillotherium, 



Hyrax. 



Coryphodon. 



Elephant. 



Phenacodus. 



Tapir, rhinoceros, horse. 



Pig, hippopotamus, camel, 



ox, sheep, deer. 

 Porpoise, dolphin, killer. 

 Whale. 

 Bear, badger, weasel, '^ dog, 



hyaena, civet, lion, cat. 

 Seal, sea-lion, walrus. 

 Mole, hedgehog, shrew. 

 *' Flying Lemur." 

 Bats. 



Fruit-bats. 

 Lemurs. 

 Monkeys'and man 



