PERENNIBRANCHIATA. 1 7 



* Proteus auguinus, Laurenti (12 b) 



Body smooth white or grayish rose; skin with mu- 

 cous pores almost concealed; branchiae supported by a 

 common peduncle ; tail much compressed. 



2 Henobranchus, Harlan. 



Necturus, Rafinesque, Wagler, Cope, Gray. 



Phanerobranchus, Fitzinger. 



Upper jaw with two curved rows of teeth, the poste- 

 rior row nearly parallel to and much longer than the an- 

 terior; tongue ovate, large, fleshy, free anteriorly and 

 laterally; toes distinct, four in front and four behind; 

 body short and thick; tail short, much compressed. 



f Meuobranclius lateralis, Holbrook. (14, 12, b) 



Synonyms, Protee tetradactyle, Lacepede ; Triton lat- 

 eralis, Say; Necturus maculosus, maculatus, luteus, 



*For the anatomy of P. anguinus see (45, b) and for the ani- 

 mals living with and serving it as nourishment see (46.) 



fCope (24, o; believes this a young Spelerpes, and that it 

 changes to that as Siredon to Amblystoma. 



