AMBLYSTOMID^. — LXXXIV. 195 



Blackish brown, gray-speckled; tail short, compressed, 

 2^- in length; head very broad; body short and squat. 

 Southern, N. to S. Ills, 

 ff Costal grooves 11. 



X Sole with one indistinct tubercle, or none. 



2. A. opacum, ( Gravenhorst ) Baird. Opaque Sala- 

 mander. Black above, with bluish gray bars; belly dark 

 blue; no dorsal furrow, no enlarged pores on the head; 

 tail 2^ in total length; body stout. Penn. to Wis. and S. 

 A handsome species. {/S. /asciata, Green.) 



3. A. punctaium, (L.) Baird. Large Spotted Sala- 

 mander. Black above wnth a series of round yellow 

 spots on each side of the back; body broad, depressed 

 and swollen; skin punctate with sniall pores, from which 

 exudes a milky fluid {Cope)\ two or three clusters of 

 enlarged pores on head; a strong dorsal groove; tail 2^ 

 in length; large. U. S., E. of the Rocky Mountains. 

 i^A. venenosa and submolacea^ Auct.) 



4. A. conspersum, Cope. Smaller Spotted Sala- 

 mander. Lead colored, with one or two series of small 

 yellow spots along sides; no dorsal groove; skin smooth; 

 tail 2^ in length; small. Penn. to Ga. 



XX Sole with two distinct tubercles. 



5. A. bicolon, Hallowell. Tw^o-Colored Salamander. 

 Olive brown, yellowish below, rising in blotches on the 

 sides; a few large yellowish spots above; limbs banded; 

 tail yellow with brown sjDots. New Jersey. 



fff Costal grooves 13. 

 a. Large species ; sole with two distinct tubercles. 



6. A. tigrinum, (Green) Baird. Tiger Salamander. 

 Chiefly brown with many yellow spots, about as large as 

 the eye; body thick and strong; the head comparatively 

 long and narrow; tail shorter than head and body; color 



