CADUCIBRANCHIATA. 27 



e. Tongue attached in front by a mem- 

 brane Hemidactylium. (3) 



e. Tongue free all around, boletoid. 



Batrachoseps. (7) 

 f. Sphenoidal teeth in two longitudinal groups 

 of several rows each; vomero-palatines in 

 a transverse series, (g) 

 f. Sphenoidal teeth wanting; vomero-palat- 

 ines in two longitudinal rows, never in 

 a transverse series, (j) 

 g. Tongue attached in front by a mem- 

 brane, (h) 

 g. Tongue free all around, boletoid. (i) 

 h. vomero-palatine teeth in a continuous 

 transverse row; commissure much 



curved Anaides. (4) 



h. Vomero-palatine series more or less in- 

 terrupted medially ; commissure nearly 



straight Plethodon. (5) 



i. Toes palmate Geotriton. (6) 



i. Toes free Spelerpes. (8) 



j. Sides salient, owing to the great develop- 

 ment of the ribs which sometimes pierce 

 the skin, (k) 

 j. Sides rounded. (1) 



k. Parotids present; tail long, compressed. 



Pleurodeles. (12) 



k. Parotids none; tail short, subcylin- 



drical Bradybates. (13) 



1. Tongue more or less free behind, (m) 



