MAMMALIA. 487 
We thus divide the class Mammalia into three sub- 
classes :—(1) Prototheria, (2) Metatheria and (3) Eutheria. 
The three sub-classes are divided into orders and sub- 
orders. The extinct forms are in z/alics :-— 
<«f ORDERS. SUB-ORDERS. 
Z| 1, Monotremata. Duckmole, Echidna. 
5 | 2. Allotheria, Microlestes, Plagiaulax. 
5 
4 
aN 
. - 
s 3. Polyprotodon- Banded anteater, bandicoot. 
SI tia Tasmanian wolf, opossum. 
< K halanger, wom 
& | 4. Diprotodontia. aaa SAE Sh WOM: 
a at. 
=z \ 
Be 
( 5. Edentata. I. Xenarthra. Anteater, sloth, armadillo, 
2. Nomarthra. Aard-vark, pangclin. 
6, Sirenia, Manatee, dugong. 
7. Rodentia. t. Duplicidentata. Rabbits, hares, and picas 
2, Simplicidentata. | Porcupine, guinea-pig, chin- 
chilla, squirrel, beaver, 
rat, mouse, pouched-rat. 
8. Tillodontia. Tillotherium, 
g. Ungulata. 1. Hyracoidea. Hyrax. 
: 2. Amblypoda. Coryphodon. 
< 3. Proboscidea, Elephant. 
% 4. Condylarthra. Phenacodus. 
a q 5. Perissodactyla. Tapir, rhinoceros, horse. 
S 6. Artiodactyla. Pig, hippopotamus, camel, 
a ox, sheep, deer. 
to, Cetacea. 1. Odontoceti, Porpoise, dolphin, killer. 
2, Mystacoceti, Whale. 
rz. Carnivora, 1. Fissipedia. Bear, badger, weasel,” doe 
hyzena, civet, lion, cat. 
z. Pinnipedia, Seal, sea-lion, walrus. 
12, Insectivora. 1. Insectivora Vera. Mole, hedgehog, shrew. 
2. Dermoptera, ‘Flying Lemur.” 
13. Chiroptera. 1. Microchiroptera. Bats. 
2, Macrochiroptera, Fruit-bats, 
14. Primates. Lemuroidea. Lemurs. 
Anthropoidea. Monkeys"and man 
