University of Michigan 



d^ \'entral color not covering more than .)4 of the lowermost 

 row of dorsal scales ; bellj' usually conspicuously spotted 

 with black. .Z). amabilis modcsfns (Dumeril and Bocourt). 

 (San Bernardino Mountains, Los Angeles County, and San- 

 ta Catalina Island, California.) 



d., \'entral color covering from V/z to 2 of the lowermost rows 

 of dorsal scales; belly usually only lightly spotted with 



black D. amahUis vandcnbiirgii, subsp. nov. 



(Ventura to Santa Cruz counties. California.) 



c., Scale rows, 15-15 or 15-13 (rarely 17-15 or 15-17-15). 



Cj Ventral color covering from ^ to ^ of the lowermost row 

 of dorsal scales ; neck ring only rarely interrupted ; color 



above usually olive or bluish slate 



D. aniabilis siiiiiHs. subsp. nov. 



(Southwestern San Bernardino County, California, south in- 

 to the San Pedro Afartir Mountains.) 



e^ Ventral color covering usually more than 2.< of the first 

 row of dorsal scales. 



i^ Neck ring from i to iH scales in width, often interrupt- 

 ed; ventral color covering from ]/> to V/j rows of dor- 

 sal scales; belly well sprinkled with small black spots; 



dorsal color usually dark 



D. amabilis aniabilis (Baird & Girard). 



(San Francisco Bay and the San Joaquin and Sacra- 

 mento River valleys, California.) 



f„ Neck ring from ij/^ to 3 scales wide, not interrupted; 

 ventral color covering from i^ to 2 or more rows of 

 dorsal scales ; belly never heavih- spotted with black. 



gj Two lowermost rows of dorsal scales flecked with 

 black; belly rather conspicuously, although sparsely, 



marked with small black dots 



J). a)iiabilis occidciitalis, subsp. nov. 



(Sonoma County north through Humboldt County, 

 California, to the Columbia River.) 



g.. Two lowermost rows of dorsal scales unicolor (not 

 flecked with black) ; belly almost or quite unspotted. 



D. aniabilis pulchcllns (Baird and Girard). 



(Western slopes of the Sierra Nevada, south, perhaps, 

 to Tcjon Pass in California, and north to southern 

 Oregon.) 



