THE AQUARIUM, APRIL, 1893. 



41 



The Chain Salamander— Natural Size. 



The Spotted Salmandee— Natural Si 



The Crested Triton— Natural Size. 



THREE EXAMPLES OF TERRESTRIAL SALAMANDERS. 



The Chain Salamander (Amblystoma catenis), of the Southern States, showing cylindrical 

 tail; and a body without costal folds. 



The Spotted Salamander (Amblystoma punctatum), of the Eastern and Central States, show- 

 ing dorsal groove, costal folds and compressed tail. 



The Crested Triton (Triton cristatus), male, of Germany, showing crest and much com- 

 pressed tail, the " breeding dress." These changes he undergoes only during the breeding season, 

 when he frequents the water. * 



