PLEtaoDONTID^. — LXXXm. 193 



if Premaxillaries united ; color yellow or red, spotted or striped. 



Spelbepes, 3. 

 XX Premaxillaries 2 ; color purplish gray or salmon color, un- 

 spotted GTemopHiLTjs, 4. 



/. HEMIDACTYLIUM, Tschudi. Poue-Toed Sala- 



MANBBES. 



1. H. souiatum, (Sohl.) Tsch. Foite-Tobd Salaman- 

 DEE. Ashy brown above; snout yellow; silvery below, 

 with dots like ink spots; tail slender, nearly twice the 

 length of the body; head blunt. R. I, to lUs., and S. 

 (S. melanosticta, Gibbes.) 



2. PLETHODOIV, Tschadi. Plethodonts. 



1. P. eryihronotus, (Green) Baird. Red -Backed 

 Saxamandbe. Plumbeous above, often with a broad 

 red dorsal band; belly marbled; body very slender; tail 

 cylindric; inner toes rudimentary; costal folds 16 to 19. 

 E. U. S., common. [P. cinereus, (Green) Cope,, variety 

 without red dorsal band.] 



2. P. glutinosus, (Green) Baird. Viscid Salaman- 

 DEE. Black, usually with gray lateral blotches and 

 smaller dorsal spots; stout; tail rounded; inner toes well 

 developed. E. U. S., chiefly terrestrial, like the pre- 

 ceding. 



3. SPELERPES, Rafinesque. Cave Salamanders. 



1. S. bilineatus, (Green) Baird. Two - Steiped Sala- 

 MANDBE. Yellow with a dark line along each side of 

 the back; belly unspotted; tail not keeled; costal folds 

 14; small. Maine to Wis. and S. 



2. S. longicaudus, (Green) Baird. Cave Salamandkk. 

 Lemon yellow; sides with many small black spots; a 

 median dorsal series; belly spotless;, tail, keeled^, very 



9 



