58 



BULLETIN 17 5, UNITED STATES NATIONAL MUSEUM 



22 





222 

 220 

 218 

 216 

 214 

 212 



210 

 208 

 206 

 204 



Coastal „„„„,,;„, 



Plain 



FiGUEE 28.— Geographic variation 

 in number of ventrals in I'itiiophis 

 melanoleucus melanoleucua. 



66 

 64 

 62 

 60 

 58 

 56 



54 

 52 



22 



Coastal Mountains 



Plain 



FiGXJEK 29.— Geographic variation 

 in number of caudals in Pituo- 

 phis melanoleucus melanoleucus. 



22 



23 



9 



8.5 



8 



7.5 



7 



6.5 



6 



US" 



Mo 



13 



12.5 



12 



11.5 



11 



10.5 



10 



Coastal 

 Plain 



Mountains 



Coastal Mountains 



Plain 



Figure 30.— Geographic variation in Figure 31.— Geosraphic variation in Figure 32.— Geographic variation 

 number of supralabials in Pituo- number of infralabials in PUuophis in number of dorsal spots in 

 phis melanoleucus melanoleucus. melanoleucus melanoleucus. Pituophis melanoleucus melano- 



leucus. 



