1026 



CLASS AMPHIBIA. 



genera from the latter deposits being Ptyonius, CEstocephalus, Hy- 

 phasma, and probably Sauropleura. , 



Family Limnerpetid^e. — In the one genus Limnerpeton, of the 

 Permian of Bohemia, the naked body is more elongated and the tail 

 shorter than in the preceding family ■ the skull being broad and 



Fig. g$$.—Seeleya pusilla; from the Permian of Bohemia. A, Under surface with scutes re- 

 moved on the left side ; and b, Right lateral view of the skeleton of the caudal region. Enlarged. 

 (After Fritsch.) 



Frog-like, with smooth bones ; and the upper and lower processes 

 of the caudal vertebrae simple. The teeth are small, with their sum- 

 mits either smooth or folded. 



