NORTH AMERICAN BATRACHIA AND REPTILIA. 37 



throat, which are yellowish; dorsal rows 27, the seven outer 

 smooth; G. 280-235. Eastern United States from Texas to 

 Massachusetts. 



39. C. ohsoletits, sul)sp. conjlnis^ B. and G. Color above 

 ashy-gray, with a series of about 45 dark chocolate-brown dorsal 

 blotches, with indistinct black margins; blotches six or seven 

 scales long and eleven wide; two smaller lateral series; beneath 

 yellowish, blotched with black; dorsal rows 25, outer six 

 smooth, the rest obsoletely carinated; G. 235-240. Austroripa- 

 rian region to Missouri ; 8. Illinois. 



40. C. guttatas, Linn. Color above light red, paler on 

 sides, with a series of about 45 dark brick-red quadrate dorsal 

 blotches, deeply margined with black; two more or less distinct 

 series of similar lateral blotches. In some alcoholic specimens 

 the blotches are hazel, with lighter intervals; beneath yellowish- 

 white, with sub-quadrate black blotches; dorsal rows 27, very 

 obsoletely carinated; G. 215-235. Austroriparian region to 

 Virginia; S. Illinois. 



£. With four longitudinal brown bands. 



41. C. quadrivittatas, Ilolb. Chicken Snake. Color 

 above greenish-yellow, with a brown lateral and dorsal band on 

 each side; beneath light straw color; dorsal rows 27, only five 

 or eight median ones carinated; G. 230-240. North Carolina 

 to Florida. 



15. Genus Spilotes, Wagler. 



Nasals two; loral one, sometimes two; anteorbitals one or 

 two; postorbitals two; superciliaries very broad; dorsal scales 

 smooth, slightly carinate along the back in some foreign species ; 

 anal entire; head deep. 



42. S. Gouperi^ Holb. Postorbitals over the fourth labial ; 

 color above black; beneath dark slate; no red markings on 

 abdomen; G. 185-187. Georgia. 



43. 8. erehennus^ Cope. Postorbitals over the fifth labial; 

 color above black, with scattered spots of reddish- white at base 

 of the scales; beneath slate color, anteriorly with bases of 

 scutellaj red; G. about 195. Texas to Alabama. 



16. Genus Pityophis, Holb. 



Vertical elongated, sometimes absent; posterior frontals 

 two pairs; loral one; anteorbitals one or two; postorbitals three 

 or four; dorsal scales carinate along back, smooth on sides; 

 anal entire. 



