630 The Animal Kingdom 



Infraclass Euthcria. 



Order 1. Insectivora. Examples: shrews, Sorer sp., Blarina. 



Order 2. Dermoptera. Example: flying lemur, Cynocephalus. 



Order 3. Chiroptera. Examples : spear-nosed bat, Phyllostomns; brown bats, 



Myotis; common bats, Eptesicus. 

 Order 4. Primates. Examples : lemurs, Lemur; howler monkey, Alouatta; 



man, Homo sapiens. 

 Order 5. Pholidota. Example : pangolin or scaly anteater, Manis. 

 Order 6. Edentata. Examples : giant anteater, Myrmecophaga; two-toed tree 



sloth, ChoJocpus; armadillo, Dasyptis. 

 Order 7. Lagomorpha. Examples : cottontail rabbit, Sylz'Hagus; hares, 



Lepus. 

 Order 8. Rodentia. Examples: beaver, Castor; tree squirrels, Sciurus; 



prairie "dog" Cynoiuys; rat, Rattus. 

 Order 9. Cetacea. Examples : narwhale, Monodon; common dolphin, Dcl- 



phinus porpoise, Phocaena. 

 Order 10. Carnivora. Examples: dog, Canis; gray fox, Urocyon; raccoon, 



Procyon; mink, Mustela; skunk, Mephitis; cats, Fclis. 

 Order 11. Tubulidentata. Example: aardvark, Oryctcropus. 

 Order 12. Proboscidea. Examples : African elephant, Loxodonta; Asiatic 



elephant, Elcphas. 

 Order 13. Hyracoidea. Example: coney, Procavia. 

 Order 14. Sirenia. Examples: dugong or sea cow, Dh^to;; 7; manatee, TnV/ic- 



chus. 

 Order 15. Perissodactyla. Examples : horse, Equus; tapirs, Tapirus; rhin- 

 oceros, Rhinoceros. 

 Order 16. Artiodactyla. Examples : pig, Sus; camel, Camelus; American 



deer, Odocoileus; domestic cattle. Bos. 



THE ORDERS OF MAMMALS 



The numerotis orders of living mammals show not only diversity 

 of structure, but also remarkable habits and ways of life. They are 

 adapted to all possible environments and show an amazing array 

 of habits. While it is impossible to discuss all the 15,000 or so species 

 of living mammals, it is possible to consider the various orders with 

 some of their better known representatives. 



Order Monotreniata. — These peculiar animals are confined to 

 Australia, Tasmania, and New Guinea. Despite the fact that they 

 lay eggs and incubate them, they are mammals. The hairy body cover- 

 ing and the nourishment of the yovmg by mammary glands are sufficient 

 to indicate their true relationships. Other characters possessed by 

 them and which make them truly unique are the possession of coracoid 

 and precoracoid bones, a horny beak, teeth present only in the >oung. 



