88 NORTH AMERICAN BATRACHIA AND EEPTILIA, 



44. P. Tnelanoleucus^ Daud. Pine Snake. Bull Snake. 

 Anteorbital one; postorbitals three; color above whitish, with 

 a dorsal series of brown blotches, margined with black, 24 to 

 the anus; three series of lateral blotches which are more or less 

 confluent; dorsal scales in 29 rows, the four outer ones smooth, 

 the next three obscurely carinate; G. 220-230. JSTew Jersey to 

 South Carolina, Ohio, Michigan (Gibbs). 



45. P. sayi^ subsp. sayi, Schl. Western Pine Snake. 

 Anteorbital one; postorbitals tliree; color above chestnut-brown, 

 with numerous transverse reddish-orange blotches, which form 

 bands posteriorly; sides mottled with black and orange; dorsal 

 scales in 25 rows; G. 220-225. Illinois to Kansas and north- 

 ward. 



IT. Genus Bascanium, B. and G. 



Nasals two; loral present; anteorbitals two, upper much 

 the larger; postorbitals two; dorsal scales smooth; anal 

 divided; eye very large; head narrow, deep; body slender. 



46. JB. Gonstrictor^ Linn. Center of eye over fourth labial, 

 which alone is in contact with postorbital ; color above in adult, 

 pitch-black; beneath with greenish tinge; young with dorsal 

 blotches; dorsal rows 17; G. 175-190. Austroriparian and 

 Eastern regions. 



47. £. anthioum^ Cope. Eye over third and fourth or 

 fourth and fifth labials; color above black, varied with many 

 yellow scales which are either single or grouped in irregular 

 spots; beneath yellow; dorsal rows 17. Louisiana. 



48. B. flagelllforme^ Catesb. Center of eye over junction 

 of fourth and fifth labials, the last in contact with the postorbital; 

 color above black anteriorly and brownish posteriorly, lightest 

 on tail; beneath yellowish-white, blotched with brown anteri- 

 orly; dorsal rows 17; G. 200-210. South Carolina to Florida. 



18. Genus Eut^nia, B. and G. 



Nasals two; loral present ; anteorbitals one or two; post- 

 orbitals three or four; dorsal scales carinate; anal entire;, 

 general color three light stripes on a dark ground. 



A. Lateral stripe on third and fourth rows of scales. 

 a. Scales little or not spotted, in 19 rows. 

 X. Dorsal band complete. 

 *Stripes uniform in color. 



49. E. saurita^ (Linn.) B. and G. Riband Snake. Color 

 above bright chocolate; light brown below, lateral stripes; 



