180 REPTILES. 



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

 more gastrosteges; below darker and more spotted. 

 Western, E. to Ohio. 



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. OPHI BOLUS, Baird and Girard. KING SNAKES. 



< Coronella, Laurenti. 



< Lamproptltis, 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. sayi, (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. doliatus, (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. iriangulus, (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 



