300 CALIFORNIA ACADEMY OF SCIENCES. 



Cnemidophorus stejnegeri sp. nov. 



Cnemidophori from northern Lower California and 

 from San Diego County, California, present much the 

 general appearance of C. tigris iDidiilatus (Hallowell). 

 They differ from that form in having the dorsal scales 

 smaller, the gular scales and the scales on the collar 

 larger, and in the presence of large and well-defined 

 black spots on the gular region. From C. tigris B. & G. 

 they differ by character of the scales as above indicated, 

 by the absence of the slate-colored suffusion on the gular 

 regions, and by the well-defined black markings on the 

 sides of the head. 



As shown by Dr. Stejneger, * C . tigris is the desert 

 form found in eastern California as far south as the 

 Mojave Desert, in southern Idaho, in Nevada, and in 

 Utah. C. tigris iDidulatiis inhabits the western slopes of 

 the Sierras, and is also found on the western side of the 

 interior valley of California, as is shown by specimens in 

 the Museum of the Leland Stanford Junior University 

 from Kelseyville, in Lake County, and from Los Gatos, 

 Santa Clara County. 



I take pleasure in dedicating this new form to Dr. 

 Leonard Stejneger, who has recently made such impor- 

 tant additions to our knowledge of Californian herpet- 

 ology. 



Description: Adult male (Type, No. 1061, Leland 

 Stanford Junior University Museum, collected by J. M. 

 Stowell between San Rafael and Ensenada, Lower Cali- 

 fornia, June 8, 1893). Nostril anterior to nasal suture; 

 three parietals; two fronto-parietals ; four supra-oculars; 

 six superciliaries; nasal not reaching second superior 

 labial; post-nasal in contact with both first and second 



'North American Fauna. No. 7, p. 201, 1893. 



