JReptilia and Batrachia of Wisconsin. 165 



ReCtIna, B. & G. 

 Habits aquatic or terrestrial; dorsal scales in 19 I'ows. 



KEY TO THE SPECIES OF REGINA. 



(a) Aiiteorbitalst\vo: upper labials, 7: loAver, 8; beneath yellow; three black 



dorsal and a yellow lateral band leberis. 



(b) Ante-orbitals one; beneath brick red, with dark near the exterior of the 



scntellffi: upper labials, 6; lower, 7 Kirtlandii. 



(c) Ante-orbitals two; beneath, yellowish; upper labials, 7; lower, 8; above, 



brownish; dorsal line lighter and bordered with black; lateral line yel- 

 low, bordered witli dark, in first second and third rows Grahamii. 



R. leberis, L. Yellow-bellied or Leather Snake. 



Above, brownish; lateral band on the first and second rows; L. 2-2^ ft.; 

 tail 5-6 inches; G. 140-150; U. 65-80; not common. 



R. Mrtlandii, Kennicott. Little Red Snake. 



Above brownish or purplish brown with irregular blotches in four rows, 

 the outer being the larger; L. about 1ft.; tail about 3 inches; G. 120-140; 

 U. 55-65; Walworth county, and probably throughout southern counties; 

 rare. 



R. Grahamii, B. & G. Graham's Snake. 



Scales strongly carinated; lateral line broad; L. 1^2 ft.; tail 3-4i inches; 

 G. 160-165; U. 57; mostly in western countries; not rare. 



Heterodon, Beauvois. 



Body quite thick set and can be dilated at Avill of the animal by inhala- 

 tion of air; hissing very peculiar and characteristic, similar in sound to the 

 rattle of the rattlesnakes; head triangular. These snakes have a strong re- 

 semblance to venomous species, when angered or disturbed, flattening their 

 bodies and head and hissing in a very threatening manner. Odor very 

 marked and unpleasant. 



H. platyrhinus, Latreille. Hog-nose Snake. Blowing Viper. Spreading 

 Adder. 



Above brownish with 28-30 dark dorsal blotclies varjdng- from quadrate 

 to circular; lateral blotches irregular; these blotches become rings on the 

 tail; vertical x>late longer than broad; beneath, slate color and varying 

 on post-abdominal region from yellow to reddish; upper labials yellow; 

 dorsal scales 25 rows (usually); G. 125-150; U. 45-50; L. 2.V-3 feet; tail 7-8 

 inches; on sandy or dry localities as far north as Madison; not common. 

 Variety niger, Catesby. Black Viper. 



Uniform black or brown above without spots; said to be more 

 ferocious than the type but is harmless; about the same range as 

 the last; rare. 



