38 
NORTH AMERICAN BATRACHIA AND REPTILIA. 
44. P. melanoleucus , 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. New Jersey to 
South Carolina, Ohio, Michigan (Gibbs). 
45. P. sayi , subsp. sayi, Schl. Western Pine Snake. 
Anteorbital one; postorbitals three; 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. 
17. 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. B. constrictor , 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. B. anthicum , Cope. Eye over third and fourth or 
fourth and fifth labials; color above black, varied with many 
yellow scales which are either single or gpouped in irregular 
spots; beneath yellow; dorsal rows 17. Louisiana. 
48. B. flag elli forme, 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^enia, 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. Kiband Snake. Color 
above bright chocolate; light brown below, lateral stripes; 
