RODENTIA: CRICETIDAE 593 



of west-central California, west of San Joaquin Valley, from upland area on 

 south side of San Francisco Bay south into San Luis Obispo County (except salt 

 marshes and sand hills along Monterey Bay) ; recorded from San Francisco and 

 Berkeley south to Pozo, San Luis Obispo County, and east to Sweeney's Ranch, 

 22 miles southwest of Los Banos, in southwestern Merced County; vertical range, 

 up to at least 2,800 feet (slopes of Mount Diablo, Contra Costa County) ; zonal 

 range, chiefly Upper Sonoran (Grinnell, Univ. California Publ. Zool., vol. 40, 

 No. 2, p. 186, Sept. 26, 1933). 



Microtus californicus halophilus von Bloeker* 



1937. Microtus californicus halophilus von Bloeker, Proc. Biol. Soc. Washing- 

 ton, vol. 50, p. 156, Sept. 10, 1937. 



Type Locality. — Moss Landing, Monterey County, Calif. Range. — Salt marshes 

 and sand hills of Monterey County, from mouth of Elkhorn Slough south to 

 Seaside. 



Microtus californicus paludicola Hatfield* 



1935. Microtus californicus paludicola Hatfield, Journ. Mamm., vol. 16, No. 4, 

 p. 316, Nov. 15, 1935. 



Type Locality. — Melrose Marsh, Alameda County, Calif. Range. — Salt marsh 

 areas of southern end of San Francisco Bay region, from west base of El Cerrito, 

 Albany, Alameda County, around south end of bay to Redwood, San Mateo 

 County. 



Microtus californicus constrictus V. Baileyf* 



1900. Microtus californicus constrictus V. Bailey, North Amer. Fauna No. 17, 

 p. 36, June 6, 1900. 



Type Locality. — Cape Mendocino, near Capetown, Humboldt County, Calif. 

 Range. — Northwest humid coast belt of California, in Mendocino and Humboldt 

 Counties; recorded from Capetown north to Eureka and interiorly to Cuddeback 

 and Fair Oaks. Vertical range, from sea level up to at least 1,000 feet; zonal 

 range, Transition. 



Microtus californicus eximius R. Kellogg* 



1918. Microtus californicus eximius R. Kellogg, Univ. California Publ. Zool., 

 vol. 21, No. 1, p. 12, Dec. 28, 1918. 



Type Locality. — Lierly's Ranch, 4 miles south of Mount Sanhedrin, Mendocino 

 County, Calif. Altitude, 2,340 feet. Range. — Northwestern California (except- 

 ing narrow coastal strip from Cape Mendocino northward), and northward to 

 Roseburg and Drain in Rogue and Umpqua River Valleys in south-central 

 Oregon; recorded at south from Olema, Marin County, east to Rumsey, Yolo 

 County; thence north to Scott River and Mayten, in Siskiyou County; east at 

 north across head of Sacramento Valley in vicinity of Red Bluff and Tehama to 

 Manton and Turner's, in Tehama County; vertical range, from sea level (western 

 Marin County) up to 7,500 feet (South Yolla Bolly Mountain, in western Tehama 

 County) ; zonal range, Lower Sonoran up through Transition (Grinnell, Univ. 

 California Publ. Zool., vol. 40, No. 2, p. 187, Sept. 26, 1933) . 



Microtus californicus aestuarinus R. Kellogg* 



1918. Microtus californicus aestuarinus R. Kellogg, Univ. California Publ. 

 Zool., vol. 21, No. 1, p. 15, Dec. 28, 1918. 



