SALAMANDERS, TRITONS, SIRENS, ETC. 



123 



than a year they will grow again ; and the limbs thus 

 formed may also be cut off, and others will grow in 

 their places ; and even if the eye be destroyed another 

 will grow to supply the loss. 

 In the Southern States is 

 found the Congo Snake, an 

 animal which is related to 

 the Salamanders and Tri- 

 tons. It is about two feet 

 long, and lives in mudd}- 

 waters. The Sirens have 

 the gills in tufts, as in Fig- 

 ures 188, 189; thus even in 

 the adult state they are like 

 the young of Frogs and Toads. They live in the water. 



Fig. 187. — Congo Snake. 



Fig. 188. — iVIud Puppy. 



Such are the Necturus, or Mud Puppy, of our Northern 



Fig. 189 — Axolotl. 



Lakes, and the Siren, of the Southern States. The 

 Axolotl of Mexico and our Western States is the 



