240 CALIFORNIA ACADEMY OF SCIENCES [Proc. 4th Ser. 



We formerly confused this form and the striped race from 

 the coast of Cahfornia, describing both as T. elegans. Al- 

 though they are rather similar in appearance, they differ in a 

 number of respects. The mountain form usually has twenty- 

 one rows of scales, while the coast subspecies usually has nine- 

 teen. The average number of gastrosteges in T. o. elegans also 

 is greater, the dorsal line is narrower, and we have never seen 

 any red in the coloration of T. a. elegans. Just where and how 

 these two forms meet has yet to be worked out. So far as we 

 now know the one is confined to the interior mountains and 

 the other to the coast region. Between them lies the area 

 occupied by T. o. coiichii in the north and T. o. hammondii in 

 the south, T. o. couchii and T. o. hammondii are mainly to be 

 found in the Lower and Upper Sonoran zones while the striped 

 snakes are more characteristic of the cooler zones of the moun- 

 tains and coast. 



Thaminophis ordinoides vagrans (Baird & Girard) 

 Wandering Garter-Snake. 



Diagnosis. — Normally with eight supralabials ; twenty-one 

 rows of scales; dorsal line distinct; ground color light with 

 distinct dorsal spots which invade the edges of the dorsal line ; 

 gastrosteges marked with black or slate along their anterior 

 edges and medially; preocular single. 



Type Locality. — California. 



Synonyms. — This race seems to have ser\^ed as the basis of 

 no other names. 



Range. — This subspecies, in typical form, is found over 

 eastern Washington and Oregon, ranging thence east across 

 Idaho to Utah, south across Nevada to eastern California in 

 the vicinity of Mono Lake, and to northern Arizona, where it 

 has been taken at Oak Creek, Fort Verde, Fort Whipple, San 

 Francisco Mountains, Mineral Spring and Prescott. Typical 

 specimens are at hand also from the San Pedro Martir Moun- 

 tains in northern Lower California, Mexico. 



