1911.] NATURAL SCIENCES OP PHILADELPHIA. 225 



17,864. Lyons, San Bernardino County, Cal. September 1, 1909. 

 17,954. Snyder's Hill, Pima County, Ariz. October 11, 1910. 

 18,004-5. Mason, Lyon County, New, 4,500 feet. September 

 5, 1910. 



18,015-17. Mountain Home, Elmore County, Idaho. August 9, 1910. 



Callisaurus ventralis (Hallowell). Zebra-tailed Lizard. 



17,472-4. Roeble's Ranch, Pima County, Ariz. July 24, 1907. 

 Hebard and Rehn. 



17,482. Yuma, Ariz. July 27, 1907. Hebard and Rehn. 



17,859-63. Lyons, San Bernardino County, Cal. November 5, 



1909. Hebard and Rehn. 



1 7,986. Palm Springs, Riverside County, Cal. September 29, 1 910. 

 Hebard and Rehn. 



17,987-8. Warren, Kern County, Cal., 3,500 feet. September 17, 



1910. Hebard and Rehn. 



17,994-6. Slope east of Mina, Esmerelda County, New, 4,800 feet, 

 September 3, 1910. Hebard and Rehn. 



lS,000-3. Mason, Lyon County, New, 4,500 feet, September 5, 

 1910. Hebard and Rehn. 



Holbrookia maculata maculata Girard. Spotted Lizard. 



1 7,832-3. Sandhills, Halsey, Thomas County, Neb. July 1 1 , 1909. 

 Hebard and Rehn. 



17,884 and 17,886. Sterling, Logan County, Colo. July 15, 1909. 

 Hebard and Rehn. 



17,966. Sand Hills of North Platte. July 28. Hebard and Rehn. 



Holbrookia maculata approximans Baird. Allied Spotted Lizard. 



16,490-1. Carr Canon, Huachuca Mountains, Arizona. August, 

 1905. Dr. H. Skinner. 



17,479. Sonora Road Canon, Tucson Mountains, Pima County, 

 Ariz. July 25, 1907. Hebard and Rehn. 



17,925 and 17,927. Gija River, Pima County, Ariz. 1910. Dr. 

 H. A. Pilsbry. 



17,928-30. Mesa, near the Baboquivari Mountains, Arizona. 

 Dr. H. A. Pilsbry. 



17,999. Sycamore Canon, Baboquivari Mountains, Arizona. 

 August 6, 1910. Hebard and Rehn. 

 Holbrookia maculata flavilenta Cope. Cope's Spotted Lizard. 



16,492. Carr Canon, Huachuca Mountains, Arizona. August, 1905. 

 Dr. H. Skinner. 



17,500. East of Alamogordo, N. Mex. (Greasewood belt). July 

 13, 1907. Hebard and Rehn. 

 15 



