200 PROCEEDINGS OF THE NATIONAL MUSEUM vol. no 



Dark-colored populations, resembling those at the type locality 

 probably occur only in the Coast Ranges and humid lowlands west of 

 the Cascade Range from northern California northward to Vancouver 

 Island. Progressive increase in pallor apparently takes place even 

 as the western slopes of the Cascades are approached. Thus, in the 

 Willamette Valley in Oregon, specimens from Carver and Vida, at 

 lower elevations, are darker than those from McKenzie Bridge a little 

 further up-stream. On the eastern slopes of the Cascades, as at 

 Boulder Cave, Wash., specimens average even paler, but are, never- 

 theless, nearer townsendii than pallescens. A single specimen from 

 Happy Camp, Siskiyou County, Calif,, is paler than most other 

 specimens identified as townsendii, but it is from an area where 

 townsendii theoretically should occur, and on the supposition that a 

 larger series would show the average to be nearer townsendii, it has 

 been identified as that form. 



Samples from collecting stations in the lowlands and Coast Range 

 south of San Francisco Bay are variable, showing intergradation with 

 P. t. pallescens. From Santa Barbara County northward the samples 

 average nearer P. t. townsendii in morphological characters. 



Plecotus appears to be absent from most parts of the Great Valley 

 of California. 



Specimens examined: A total of 83, from the following localities: 



UNITED STATES: California: Alameda County: Mission San Jose, 25s 

 (MVZ). Fresno County: New Jaria [=-New Idria?], lb (USNM). Marin County: 

 Nicasio, Is (USNM). Monterey County: Stonewall Creek, 1,300 feet, 6.3 miles 

 northeast of Soledad, 2s (MVZ). Napa County: Mount Veeder [1,950 feet], Is 

 (USNM). San Benito County: Bear Valley [The Pinnacles, near Cook, 2,000 

 feet], 2s (USNM); 4 miles west-northwest of Panoche, Is (MVZ). San Luis 

 Obispo County: 5 miles south-southwest of Adelaida, 2,200 feet. Is (MVZ); 

 San Simeon, Is (MVZ); 6.5 miles southeast of Shandon, Is (MVZ). San Mateo 

 County: 2.0 to 2.5 miles east of Pescadero, 2s (MVZ). Santa Clara County: 

 Evergreen, 2s (MVZ); 2.25 miles northwest of San Felipe, 2s (MVZ). Santa 

 Cruz County: 2 miles southwest of Brookdale, Is (MVZ) ; Mouth of Meder Creek, 

 2s (MVZ); 2 to 3 miles east of Santa Cruz, 2s (MVZ). Siskiyou County: Happy- 

 Camp, Is (USNM). Oregon: Clackamas County: Carver, 4s (CNHM), 3s 

 (USNM). Curry County: Gold Beach, 5s (CNHM), Is (MCZ), la (USNM). 

 Lane County: Creswell, la (USNM); McKenzie Bridge, 3s (USNM); Vida, Is 

 (USNM). Washington: Kittitas County : Boulder Cave, Naches River, 43 miles 

 northwest of Yakima, 14as (USNM). Thurston County: Olympia, Is (USNM). 



CANADA: British Columbia: Vancouver Island: Comox, Is (USNM). 



Additional records: The following records probably refer to this 

 form : 



UNITED STATES: California: Alameda County: 4 miles east-southeast of 

 Mission San Jose (Dalquest, 1947, p. 20). Colusa County: 2.25 miles south- 

 southeast of Wilbur Springs, 1,800 feet (Frum, 1954, in litt.). Humboldt County: 

 Carlotta (Dickey, 1922, p. 116). Lake County: Long Valley (Dalquest, 1947, 

 p. 20); Lucerne (Frum, 1954, in litt.); 4 miles east of Upper Lake (Dalquest, 



