154 BULLETIN 61, UNITED STATES NATIONAL MUSEUM. 



17Q 



164 

 156 

 148 

 140 

 152 



Gold Portland, I'uget Comox 



Beach. Oreg. Sound, Lake, 



Cal. Seattle, Vic- 



Fort toria, 

 Steilacoon, Van- 



Tacoma, couver 



Wash. Island. 



Fig. 6G.— Diagram showing the variation in the number of ventral scutes in 

 Thamnophis ordinoides. 



Fresno, Santa Cruz Nicasio, Crescent 

 Cal. County, San Pablo City, 



Cal. Creek, San Cal. 

 Francisco, 

 Cal. 



95 

 85 

 77 

 69 

 61 

 53 



Fresno, Santa Cruz Nicasio, Cresent 

 Cal. County, San Pablo City, 



Cal. 



Creek, San 



Francisco, 



Cal. 



Cal. 



Fig. G7. 



-Diagram showing the variation in the number of subcaudal scutes in 

 Thamnophis ordinoides. 



