1911.] NATURAL SCIENCES OF PHILADELPHIA. 231 



17,985. Palm Springs, Riverside County, Cal. September 29, 

 1910. Hebard and Rehn. 



18,018-22. Sentinel, Maricopa County, Ariz. October 2, 1910. 

 Hebard and Rehn. 



Cnemidophorus tigris melanostethus Cope. Black-throated Tiger Lizard. 



17,466-70. Roeble's Ranch, Coyote Springs between Tucson and 

 Baboquivari Mountains, Arizona. July 24, 1907. Hebard and 

 Rehn. 



Eumeces obsoletns Baird and Girard. Sonora Skink. 



16.487. Carr Canon, Huachuca Mountains, Arizona. August, 

 1905. Dr. H. Skinner. 



16,493-4. Carr Canon, Huachuca Mountains, Arizona. August, 

 1905. Dr. H. Skinner. 



Diadophis regalis Baird and Girard. Sonora Ring-necked Snake. 



17,889. Baboquivari Canon, Baboquivari Mountains, Pima County, 

 Ariz. 1910. Dr. H. A. Pilsbry. 



17,953. Otero Canon, Baboquivari Mountains, Pima County, 

 Ariz. 1910. Dr. H. A. Pilsbry. 



17,998. Sycamore Canon, Baboquivari Mountains, Pima County, 

 Ariz. October 6, 1910. Hebard and Rehn. 

 Bascanion semilineatum Cope. Arizona Whip Snake. 



16.488. Carr Canon, Huachuca Mountains, Arizona. August, 

 1905. Dr. H. Skinner. 



Bascanion flagellum Shaw. Whip Snake. 



17,896. Between Baboquivari Mountains and Las Gijas, Arizona. 

 1910. Dr. H. A. Pilsbry. 



Bascanion constrictor venustum Baird and Girard. California Black Snake. 



17,852. Sisson, Siskiyou County, Cal. August 15, 1909. Hebard 

 and Rehn. 

 Elaphe chlorosoma (Gttnther). Mexican Green Snake. 



17,895. Santa Rita Mountains, Arizona, 1910. Dr. H. A. 

 Pilsbry. 



17,909. Agua Caliente Canon, Santa Rita Mountains, Arizona, 

 6,000 feet. 1910. Dr. H. A. Pilsbry. 



The identity of these specimens was confirmed by Dr. Leonhard 

 Stejneger who kindly examined one of them. The species was not 

 previously known from north of the Mexican boundary. 

 Lampropeltis pyrrhomelaena Cope. Arizona Ringed Snake. 



16,531-3. Carr Canon, Huachuca Mountains, Arizona. August, 

 1905. Dr. H. Skinner. 



