CADUCIBRANCHIATA. 39 



(3) Ambiy stoma tigrmum, Green. (14) 



Synonyms, Amblystoma luridum, Baird, Hallowell ; 

 Amblystoma episcopus, Baird, Hallowell; Salamandra 

 lurida, Sager;* Salamandra ingens, Green; Salamandra 

 tigrina, Harlan, Green; Triton tigrinus, Holbrook, De- 

 Kay. 



Color in alcohol varying from brown to lurid above, 

 plumbeous and yellowish white below, the yellowish 

 white in blotches between the brown and plumbeous, 

 sometimes connected longitudinally: spots varying from 

 reddish brown to white, yellow in fresh specimens, ex- 

 tending from the head to the tail and scattered irregu- 

 larly: tail oval: body cylindrical in some, in others thick- 

 est in the middle, and tapering both ways: head depress- 

 ed: muzzle round; skin smooth with numerous mucous 

 pores: cervical fold and fold behind the eye with con- 

 necting parotid ridge: costal furrows eleven, strongly 

 marked, and others becoming indistinct; furrows behind 

 the legs gradually ceasing, so that the end of the tail is 

 smooth: back with longitudinal groove: tail without 

 any indication of lateral furrows: eyes prominent: nos- 



*Dr. Sager believes his A. luridum distinct from tigrinum. 

 If so the above description is that of luridum, and I have not 

 seen the tigrinum. 



