CADUCIBRANCHIATA. IO3 



14 Notophthalmus, Ratinesque. 



Synonyms, Diemyctylus, Rafinesque, Cope; Cynops, 

 Tschudi; Taricha, Gray. 



Teeth in two longitudinal series, closely approximated 

 in front, divergent behind; tongue attached anteriorly 

 and posteriorly, and with only a small portion of its la- 

 teral margins free; postorbital arch long and strong, 

 formed by the union of the tympanic and frontal bones; 

 palatine processes cuneiform; spinous processes of ver- 

 tebrae quadrangular;- ribs rudimentary; tail small, com- 

 pressed from the base; toes four in front and five behind 

 the first and fifth rudimentary. 



Spots beneath numerous and black, (a) 

 Spots beneath few or none, (b) 



a. Skin smooth N. viridescens. (i) 



a. Skin above rough N. pyrrhogaster. (3) 



b. Skin much granulated, (c) 



b. Skin slightly granulated N. l^evis. (4) 



c. Color beneath bright yellow. N. torosus. (2) 

 c. Color beneath plumbeous. . N. chinensis. (5 ) 



