180 KEPTILES. 



Var. amabilis, (B. & G.) Cope, is slender, with 180 or 

 more gastrosteges; below darker and more spotted. 

 Western, E. to OhiOo 



2. D. arnyi, Kenn. ARNY'S RING -NECKED SNAKE. 

 Lead black; belly spotted and mottled with black; 

 occipital ring narrow, scales 17. Ills, to Kansas. 



12. OPHIBOLUS, Baird and Girard. KING SNAKES, 



< Coronella, Laurenti. 



< Lampropeltis, Auct. 



1. 0. getulus, (L.) B. & G. CHAIN SNAKE. THUNDER 

 SNAKE. Black with narrow yellowish lines forking on 

 the flanks, each fork embracing a large black spot; belly 

 checkered; scales 21; G. 210 to 225; L. 50. Maryland 

 to La., E. of the mountains; variable; represented west- 

 ward by 



Var. say/, (Holbr.) Cope. KING SNAKE. Lustrous 

 black, many scales with a whitish spot in the center. 

 Alleghany to Rocky Mts., abundant, N. to Ills.; a hand- 

 some species. 



2. 0. doliaius, (L.) B. & G. RED SNAKE. CORN SNAKE, 

 etc. Red with twenty to twenty -five pairs of black 

 rings, each set enclosing a yellowish one; head red; 

 scales 21; G. 180 to 210; L. 30 to 50. Md. to Kansas 

 and S.; exceedingly variable, running by degrees into 

 the following variety, extremes of which bear little 

 resemblance to the typical doliatus. 



Var. triangu/us, (Boie ) Cope. MILK SNAKE. HOUSE 

 SNAKE. SPOTTED ADDER. Grayish, with three series of 

 brown, rounded blotches bordered with black, about fifty 

 of them in the dorsal row; an arrow-shaped occipital 



