600 The Animal Kingdom 



Fig. 202.— Representative amphibians and reptiles, a. Ambystoma tigrinum, 

 the tiger salamander; b, Plethodon cinereus, the red-backed salamander; c, a cae- 

 cilian; d, Terrapene, a box turtle; e, Anolis, the chameleon; /, Alligator; g. Coluber, 

 a blacksnake; h, Necturus, the mudpuppy; i, Bufo, a toad; j, Heloderma, the Gila 

 monster; k, Sphenodon, the tuatera; I, Crotalus, a rattlesnake; ??i, Amyda, a soft- 

 shelled turtle. 



