12. SCELOPORUS 283 



Remarks. This subspecies differs from S. g. graciosus 

 in coloration and in having smaller dorsal scales. With the 

 exception of a few specimens from BelPs Springs, Mendo- 

 cino County, California, I have not found any with keeled 

 scales on the back of the thigh. The coloration usually is 

 more blended than in S. g. graciosus, and the blotches and 

 longitudinal bands often are less definite. From S. g. van- 

 denburgianus it seems to differ chiefly in coloration, though 

 it seldom, if ever, attains the size of the larger individuals 

 of that subspecies. 



Distribution. This subspecies occupies the western parts 

 of Washington and Oregon, and northern California. In 

 California, it occurs south in the coast ranges to Solano 

 County and through the Sierra Nevada to Kern and north- 

 ern Ventura counties. Its eastern boundary cannot be de- 

 fined for it changes gradually into the larger scaled S. g. 

 graciosus. Specimens from Umatilla County, Oregon, have 

 smaller scales than those from Weiser and Boise, Idaho, and 

 in Lake County, Oregon, those from Warner Lakes have 

 larger scales than those from Paisley and Summer Lake. 

 California specimens have the smallest scales. The con- 

 trast between Utah specimens and those from west of the 

 Sierra Nevada and Cascade Mountains is great, but the line 

 of separation of the areas occupied by the two subspecies 

 still must be more or less an arbitrary one. At present it 

 seems best to refer to S. g. graciosus all specimens from Utah 

 and Idaho, from Nevada, except the extreme west and 

 southwest, and from Malheur, Harney and the eastern 

 half of Lake counties, Oregon, while to the present sub- 

 species, S. g. gracilis, are referred all specimens from Wash- 

 ington, northern and western Oregon, northern California, 

 and extreme western and southwestern Nevada. 



In California, the Mountain Lizard has been collected 



