The Striped Snakes— Garter Snakes 



Dimensions. — Total Length 291 inches. 



Length of Tail 7J 



Greatest Diameter | 



Width of Head j\ 



Length of Head i ji. 



Distribution. — Western Montana, Idaho, Oregon and W 

 ington. 



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THE NARROW-HEADED GARTER SNAKE 

 Eutcenia sirtalis, variety leptocephala, (B. & G.) 



In pattern and colours this variety appeals strongly to the 

 typical form. Its structural characters are fairly distinctive 

 and may be summarised as follows: The frequent possession of 17 

 oblique rows of scales in place of the usual 19 rows, of forms 

 of this species; the small, narrow head, but little distinct from 

 the neck; the smaller size of the reptile as compared with others 

 of the sirtalis group. 



Colouration. — Brown or olive, with three distinct, yellow 

 stripes of much the same width and appearance as the typical 

 form. Between the stripes are two rows of spots, differing in 

 their character from the pattern of other forms, in not being in 

 contact with each other. The abdomen is dark olive or blackish. 



Dimensions. — The measurements of a mature female specimen 

 are given : 



Total Length i6i inches. 



Length of Tail 3J 



Greatest Diameter I " 



Width of Head ^ " 



Length of Head f 



Distribution. — The Pacific region, from central California 

 northward to British Columbia. 



THE WESTERN SPOTTED GARTER SNAKE 



Eutcenia miiltimaculaia, (Cope) 



This aquatic species occurs in the United States, only in 



southern New Mexico. It is common in the state of Chihuahua, 



Mexico. The body scales are in 21 oblique rows. The species 



attains a length of about twenty-nine inches. 



Colouration.^Gxdiyhh or brown, without stripes, but marked 

 with six or seven series of brown or reddish spots which are paler 



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