6. CROTAPHYTUS 123 



ing at 4,100 feet, Big Creek Ranch at 4,350 feet, Alder 

 Creek, Leonard Creek and Thousand Creek Flat at 5,000 

 feet), Lander (Battle Mountain), Eureka (Beowawe), Elko 

 (Carlin), and White Pine (Antelope Springs and Snake 

 Creek), counties. 



In Oregon, it has been found at The Dalles, Wasco 

 County, Summer Lake, Lake County, and Watson, Vale 

 and Rome, Malheur County. 



In Idaho, it has been collected in Owyhee (plains across 

 river from Glenn's Ferry, mouth of the Bruneau River), 

 Jerome (Blue Lakes to Shoshone Falls) Twin Falls (south 

 side of Snake River near Salmon Falls), Cassia (Cotton- 

 wood Creek), Gooding (plains north side of Snake River 

 between Upper Salmon Falls and Bliss, plains between 

 Bliss and Snake River), Elmore (Glenn's Ferry, Mountain 

 Home), Ada (Boise), Washington (Weiser), and Bing- 

 ham (Fort Hall), counties. 



In Utah, it has been collected in Washington (St. George, 

 1 miles northwest from St. George, Rockville, Black Ridge 

 at 4,500 feet, Peter's Leap Creek, Bellevue at 4,500 feet, 

 and Virgin City at 4,000 feet, Mountain Meadows), Beaver 

 (Newhouse, Beaver Creek Hills), Tooele (Dugway Moun- 

 tains), Millard (Dome Canyon, Cove Fort), Emery (Green 

 River), and Grand (Elgin, Thompson), counties, and at 

 Meadow Creek. 



In Arizona, it is known to occur in Mohave (Fort 

 Mohave, Hackberry), Coconino (Lee's Ferry, Painted 

 Desert, Great Falls of the Little Colorado River), Yava- 

 pai (Fort Whipple), Maricopa (Paradise Valley, Phoenix, 

 Vulture), Gila (Gila River), Graham (Safford), Pima 

 (Catalina Mountains, Tucson, Fort Lowell, Sabino Canyon, 

 Snyder's Hill) Santa Cruz (Nogales), and Yuma (Yuma, 

 Papago Wells), counties. 



In Lower California it has been captured at Gardner's 



