AMBLYSTOMID^. — ^LXXXIV. 195 



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

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

 Southern, N. to S. Ills. 



tt Costal grooves 11. 

 J Sole with one indistinct tubercle, or none. 



3. 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. fasciata. Green.) 



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

 mander. Black above with a series of round yellow 

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

 and swollen; skin punctate with small pores, from which 

 exudes a milky fluid {Oope); 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. 

 {A, venenosa and subviolacea, Auot.) 



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. bioolor, Hallowell. Two-Colored Salamander. 

 Olive brown, yellowish below, rising in blotches on the 

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

 tail yellow with brown spots. New Jersey. 



fff Costal grooves 13. 

 a. Large species ; sole with two distinct tubercles. 



6. A. iigrinum, (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 



