THE REPTILE BOOK 



PLATK. CXXXIV 



PRAIRIE RATTLESNAKE, Crotdus confluentus 



A reptile swarming over the western prairies. The clay-colored markings are in perfect harmony with the soil. Few examples 



are over four feet long 



PACIFIC RATTLESNAKE, Crotalus oregonus 



The common rattlesnake of the Pacific Region. A jet black phase is abundant in the northern portion of the range 



An adult is about four feet long 



