172 



BULLETIN 17 5, UNITED STATES NATIONAL MUSEUM 



Agency, west of Dragon; Utah County, Provo; Washington County, St. George, 

 Leeds, Rockville, Beaverdam Mountains; Weber County, Ogden. Other 

 Utah localities are the indefinite references Provo Canyon in Wasatch Moun- 

 tains; near 38°; and Salt Lake. 



Colorado: Mesa County, Grand Junction; Montrose County, Naturita. 



Wyoming. 



Idaho: Ada County, Boise; Adams County, Indian Valley; Bear Lake County, 

 east side of Bear Lake; Blaine County, Arco, Big Butte; Elmore County, 

 Indian Creek, 5 miles south of Cleft; Nez Perce County, Lewiston; Owyhee 

 County, Snake River west of Bruneau River; Twin Falls County, Blue Lakes. 



R^Slon 12 3 4 5 6 



FiGURK 75.— Geographic variation in number of caudals in Pituophis catenifer deurtkola. 



Oregon: Harney County, Burns; Malheur County, Juntura, Rome on Owyhee 

 River; Umatilla County, Umatilla, John Day River, John Day Valley. 



Washington: Asotin County, Asotin; Spokane County, Marshall; Walla Walla 

 County, Walla Walla, Prescott, 15 miles west of Walla Walla, Fort Walla 

 Walla, Wallula; Whitman County, Wawawai, Almota, Pullman. 



Additional published records for this form are: 



California: Imperial County, Coyote Wells, El Centro (Klauber, 1928, in lilt.), 

 Seeley (Klauber, 1928, in lilt.; Klauber, 1931, p. 78), Westmoreland, 2 miles 

 west of Yuma, 4 miles west of Yuma, 6 miles west of El Centro, 10 miles west 



