VARIATIONS OF GARTER-SNAKES, 



135 



The most nortliern localities from which we have examine! speci- 

 mens are Owens Lake, Kernville, and Fresno, California, the latter 

 locality indicating that it enters the interior valley of California. To 

 what extent it occurs in this valley can not be determined until its 

 relation to elegans is known. The southernmost locality in which it 

 has been found is La Guilla, Lower California. The form is thus known 



San Fronci 



Fig. 56.— Distribution of Tuamnophis hammondi, as indicated by the locality reciirds. 



only from the mountainous region of southern California and north- 

 ern liower California, and what is known of its habits would indicate 

 that it will not be found conunonly in the desert region adjoining 

 unless it be in the mountains'* (fig. 56). 



.oThe locality " Mohave Desert, Arizona," is too general to be relied upon. 



