VARIATIONS OF GARTER-SNAKES. 



151 



Variation. — The dorsal scale fonuiila of on/inoides is i!;eiierallv 

 small, as shown ])y the accoiiipanyino- (Hat>;raiii (%. 63). The 



I 



CD 



<^ 



^ '' 



^-^ 



>^ 



^r-^ 



e — ^ 



■^ 



>^ 



\ 

 \ 



'2 \ 



/ 



K' 



* 





fO 



¥^} 



^ \ 



-a-^ 



r-- 





I 



I 



en 



I 

 en 



LO 



r-- 



!U S .ii o 



=s s .G a 



o c 



;? o 



LT? 



I 



diagram further shows that there is a considerable ranii:e of variation 

 in this character, the extremes approximating those for the genus, 



