APPENDIX TO CHAPTER XVII 



267 



Ci. Palatine teeth in transverse (or nearly 



transverse) series. 

 d\. Vertebrse doubly concave. 



e\. Parasphenoid without teeth ; 



tongue large ; toes 4-5 

 e-2. Parasphenoid with teeth ; 



tongue small 

 d*. Vertebras convex behind only ; 



tongue moderate ; toes 5 

 C 2 . Palatine teeth in 2 longitudinal series, 

 diverging behind .... 



AmblystomidcB 



Plethodontidce 



Desmognathidce 



Pleurodelidcp. 

 (Ex. Diemyctylus) 



