U. GERRHONOTUS +53 



and in the Camas Mountains and at Drain, Douglas County. 

 Cope's record of "Gerrhonoius fnultscarhiatus", from the 

 Willamette Valley between Salem and Portland may relate 

 to this species or to G. principis. The U. S. National 

 Museum has specimens from seven miles north of Lone- 

 rock, Gilliam County, the Des Chutes River, and Fort 

 Umpqua, Douglas County. 



In Washington, it has been taken in Klickitat County on 

 the Columbia River opposite John Day River and three 

 miles north of Grand Dalles. 



In California, this lizard has been found in Siskiyou 

 (Mount Shasta, Squaw Creek), Shasta (Baird, Redding), 

 Tehama (Mill Creek, Red Bluff), Mendocino (Irishes, 

 Fairbanks, Covelo, three miles west from Covelo, Layton- 

 ville), Butte (Chico, Chamber's Ravine near Oroville), 

 Sutter (Marysville Buttes), Yuba (Camptonville), Placer 

 (Michigan Bluff), El Dorado (Riverton, Fyffe), Yolo 

 (Rumsey), Lake (Blue Lakes, Lower Lake, Kelseyville), 

 Napa (St. Helena, Napa), Solano (Vacaville), Sonoma 

 (Santa Rosa, Petaluma, Agua Caliente, Skaggs Springs, 

 Monte Rio, Cloverdale, Freestone), Marin (Tocaloma, 

 Point Reyes Station, Lagunitas, Ross, San Rafael, San 

 Anselmo), Contra Costa (Mount Diablo), Alameda (Berke- 

 ley, Oakland, Haywards, Calaveras Valley, Livermore), 

 San Mateo (Menlo, Woodside), Santa Clara (Palo Alto, 

 Stanford University, Santa Clara, College Park, Smith 

 Creek, Los Gatos, Morgan Hill, Gilroy), Santa Cruz (Cor- 

 ralitos, Soquel), Monterey (Monterey, Pacific Grove, Car- 

 mel, Tassajara Creek, Chalk Peak), San Luis Obispo 

 (Pismo), and Santa Barbara (Santa Barbara) counties, and 

 on San Miguel, Prince's, Santa Rosa, Santa Cruz, and East 

 Anna Capa islands. 



This species appears to be most abundant in the chapar- 

 ral of the Upper Sonoran Zone, but is not confined to this 



