154 Journal of the Mitchell Society [ December 
27. Head with enlarged pores, w 7 hich give it a pitted ap- 
pearance. Underparts usually with black dots. Sides 
with dark longitudinal stripes. Margined Salamander 
( Stereo chilus marg inatus ) . 
Not as above. 28. 
28. Tail compressed and finned at least for the apical two 
thirds. 29. 
Tail rounded. 32. 
29. Color wholly black above and below. Black Triton 
( Desmognath us n igra ) . 
Color not all black. 30. 
30. Snout very flat, broad and depressed. Yellowish buff, 
thickly marked above with confluent black blotches. 
Underparts unmarked. Moore's Triton ( Leurognathus 
marmoratus). 
Snout more or less arched. 31. 
31. Skin of head granulated. Underparts usually more 
or less uniform slate color. Size rather large. Moun- 
tain Triton ( Desniognathus quadnmaculatus ) . 
Skin of head not granulated. Underparts pale. Brown 
Triton (Desmognatkus fused). 
32. Color brownish yellow, often spotted. Yellow Salaman- 
der ( Desniognathus ochrofihea) * 
Color blackish or plumbeous. (Genus Plethodon.) 33. 
33. Color lead-colored with a chestnut red dorsal band, size 
small. Redbacked Salamander (P. erythi'onotus). 
Color uniform lead color. Plumbeous Salamander P. 
e. cinereus). 
Color black with various markings. 34. 
34. Black with red legs. Sherman Salamander {P. Sher- 
mani). 
*A11 the species of the the genus Desniognathus have a peculiar physiog- 
nomy which is very characteristic, but not easy to describe. 
