APPENDIX TO CHAPTER XVII 



267 



Palatine teeth in transverse (or nearly 



transverse) series. 

 d\. Vertebrae doubly concave. 



e\. Parasphenoid without teeth ; 



tongue large ; toes 4-5 

 63. Parasphenoid with teeth ; 



tongue small .. 

 do. Vertebrae convex behind only ; 



tongue moderate ; toes 5 

 Palatine teeth in 2 longitudinal series, 

 diverging behind . 



Amblystomidce 



PlethodontidcK 



Desmognathidce 



Pleurodelidat 



(Ex. Diemyctylus) 



