822 13. COLUBR1DM 



Sonoran zones. I have examined specimens from Oregon, 

 taken near Siskiyou, Jackson County, and from California, 

 from Shasta (Anderson), Del Norte (Gasquet, Requa), 

 Humboldt (Trinidad, Eureka, Ferndale, Alton, Carlotta, 

 Cuddeback, White Thorn, Garberville), Mendocino (Bald 

 Hill, Irishes, Cahto, Covelo, Ten Mile River, Laytonville, 

 Sherwood, Mendocino, Big River, Comptche, Albion River, 

 Roberts Creek near Ukiah, Garcia River, Point Arena, 

 Pieta, Gualala), Lake (Middleton), Yolo (Rumsey), 

 Sonoma (Wheatfield Fork Gualala River, Skaggs Springs, 

 Cazadero, Duncan Mills, Austin Creek, Kidd Creek, Guerne- 

 ville, Freestone), Napa (Berryessa Creek, St. Helena), 

 Solano (Vacaville), Marin (Inverness, Point Reyes, Tocal- 

 oma, Olema, Mill Valley, San Rafael, Sausalito), Contra 

 Costa (Mt. Diablo, Walnut Creek), Alameda (Berkeley, 

 Oakland, San Leandro, Calaveras Valley), San Francisco 

 (Golden Gate Park, Union Square, Presidio), San Mateo 

 (San Bruno, Portola, Woodside, Searsville, Corte Madera 

 Creek, Butano Basin, La Honda, Pescadero), Santa Clara 

 (Stanford University, Palo Alto, Corte Madera Canyon, 

 Stevens Creek, Los Gatos, Santa Clara, San Jose, Smith 

 Creek, Mt. Hamilton, Uvas Creek, Coyote Creek, Gilroy 

 Hot Springs), Santa Cruz (Waddell Creek, Swanton, Fel- 

 ton, Glen wood, Sequel), Monterey (Salinas River near 

 Blanco, Seaside, Pacific Grove, Carmel, San Macento, 

 Garapatos Creek, Mill Creek, Little Sur River, Partington 

 Canyon), San Luis Obispo (Morro, Oceano), and Santa 

 Barbara (Santa Ynez River) counties. 



Remarks. This subspecies formerly was confused with 

 T. ordinoides elegans by me and with T. ordinoides ordi- 

 noides by Brown and Ruthven. It differs from T. ordi- 

 noides elegans in the smaller average number of its scale- 

 rows and ventral plates, as well as in coloration. The dorsal 



