Amphibians 



The amphibia arc readily distinguished by having moist, soft, 

 scaleless skins. The young go through a gilled stage, usually under 

 water, at which time they are called tadoples. The adults usually 

 lose their external gills, acquire lungs, and thereafter live on land 

 most of the time or for more or less extended periods. 



There are two main types of amphibia here — the tailed forms, or 

 Caudata, to which our salamanders belong, and the tailless, jump- 

 ing Anura, to which our various frogs and toads belong. 



THE PERMANENTLY LARVAL 

 SALAMANDERS 



(Proteidae) 

 This family breaks the general rule that amphibians transform 

 from water animals with gills to air-breathing animals with lungs. 

 It members go through life lacking eyelids and with their fringe- 

 like gills hanging from either side of their throats. 



MuDPUPPY CNecturus viaculosus) 



Appearance. A large, heavy-bodied salamander with three con- 

 spicuous red gill fringes on either side of the head. These gills are 



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