Oc. PAPERS, CAL. ACAD. Sci., VOL. X 



[VAN DENBURGH] 



PLATE 103 



Fi<;. 1. Crrjtalus eiiyo, Lower California Rattlesnake 

 SiTtion of ukin of specimen collected at San Jose del Cabo, Lower California, Mexico. 



Fie. 2. Crotiiliis tigris, Tiger Rattlesnake 



iun of skin of specimen collected eighteen miles north of Tucson. Pima County, Arizona, 



May, 1912. 



