GROUPS OF AXIMALS 



261 



legs but resembles the snake in the scaly covering of 

 the body. The snake is perhaps the most disliked and 



Fig:. 117. Snake. 



feared of all the animals. This is scarcely deserved 

 because most snakes are harmless. The rattle-snakes, 

 water moccasins, and 

 copperheads are the 

 commonest of the 

 venomous snakes. 



Amphibians. (Am- 

 phi, both; bios, life). 

 As the name indi- 

 cates, the members of Photograph by American Museum of 

 ., . Naturtu History. 



this group pass a part Fig . 118 . Green turtle . 



of their lives in water 



and the other part on land. In the earlier stages of 

 their development they take oxygen out of the water by 

 means of gills, the way fish do. Later, however, they 



