50 University of California Publications in Zoology [Vol. 12 



of a tree, yet the large black males on the light rocks are exceedingly 

 conspicuous. On the whole, however, the general background colors 

 of the country seems to be reflected in the general coloration of the 

 reptiles. 



Zoological Laboratory, Mills College, California. 



Transmitted March 7, 1913. 



LITERATURE CITED 



Bryant, H. C. 



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Arizona. Proc. Calif. Acad. Sci., (4), 3, 147-154. 



