178 BEPTILES. 



greenish and the spaces between the lateral spots vivid 

 brick red. Ind. (Jordan) and W. 



6. BASCANIUHI, Baird and Girard. BLACK SNAKES. 

 > Coryphodon, Dumeril et Bibron. 



1. B. constrictor, (L.) B. & G. BLACK SNAKE. Lus- 

 trous pitch black, greenish below, chin and throat white; 

 young olive with rhomboid blotches ; large, rather 

 slender; scales 17 (rarely 19); G. 170 to 200; L. 50 to 

 60. E. U. S., common E. and S. 



7. PITYOPHIS, Holbrook. PINE SNAKES. 



1. P. melanoleucus, (Baud.) Holb. PINE SNAKE. 

 BULL SNAKE. White, with chestnut brown blotches 

 which are margined with black, besides other markings; 

 scales 29; G. 220 to 230; L. 60. Pine woods; N. J. to 

 Ohio and southward. 



2. P. sayi, (Schlegel) B. & G. WESTERN PINE SNAKE, 

 Whitish or reddish, with many dark blotches and spots; 

 scales usually 25; G. 220 to 230; L. 40 to 70. Western, 

 E. to Wis 



8. COLUBER, Linnaeus. RACERS. 

 > ScotophiS) B. & G. 



1. C. guttattiSf L. SPOTTED RACER. Red brown with 

 a dorsal series of large, red, dark -edged blotches; belly 

 checkered with black; scales 27; G. 210 to 230; L. 50. 

 Virginia and S. 



2. C. obsoletus, Say. PILOT SNAKE. RACER. Lustrous 

 black, some scales white -edged; vertical plate longer 

 than broad; scales 27; G. 235; L. 50 to 75. Mass, to 

 Ills, and Texas; one of our largest snakes. (C. alle- 

 ghaniensis, Holbr.) 



