410 BULLETIN 128, UNITED STATES NATIONAL MUSEUM. 



t*Microtus californicus californicus — Continued. 



1853. Arvicola edax LeConte, Proc. Acad. Nat. Sci. Philadel- 

 phia, vol. 6, p. 405. (California, south of San Francisco. 



Probably Monterey according to R. Kellogg, Univ. Calif. 



Publ. Zool., vol. 21, p. 18, December 28, 1918.) 

 1897. [Microtus] californicus Trouessart, Catal. Mamm. viv. 



foss., p. 563. 

 Type Locality. — Vicinity of San Francisco Bay, California; 



probably at San Francisquito Creek, near Palo Alto, Santa Clara 



County. 

 Range. — Coastal region of west-central California, west of San 



Joaquin Valley, from Pozo, San Luis Obispo County, north to 



San Francisco, and to Walnut Creek, Contra Costa County. 



Vertical range from sea level up at least to 2,800 feet; zonal 



range Upper Sonoran and Transition. 



t*Microtus californicus constrictus Bailey. 



1900. Microt'us californicus constrictus Bailey, North Amer. 

 Fauna, No. 17, p. 36. June 6, 1900. 



Type. — Cape Mendocino, Humboldt Count3^ California. 



Range. — Northwest coast of California, in vicinity of Cape Men- 

 docino, Himiboldt County, from Capetown north to Eureka and 

 interiorly to Fair Oaks and Cuddeback. 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. Calif. 

 Publ. Zool., vol. 21, p. 12. December 28, 1918. 



Type Locality.— Lierly's Ranch, 4 miles south of Mount San- 

 hedrin, Mendocino County, California. Altitude, 2,340 feet. 



Range. — Northwestern California (excepting a narrow coastal 

 strip from Cape Mendocino north to the Oregon line), and 

 south-central Oregon; from Olema, Marin County, California, 

 east to Rumsey, Yolo County, and north to Drain in the 

 Umpqua River Valley, Oregon. Vertical range from sea 

 level up to 7,500 feet; zonal range Upper Sonoran and Transi- 

 tion. 



*Microtus californicus aestuarinus R. Kellogg. 



1918. Microtus californicus sestuarinus R. Kellogg, Univ. Calif. 

 Publ. Zool., vol. 21, p. 15. December 28, 1918. 



Type Locality. — Grizzly Island, Solano County, California. 



Range. — San Joaquin and Sacramento River valleys, from 

 Tulare Lake, Kings County, north to Chico, Butte County, and 

 east to near Gait, in San Joaquin County; also west along 

 north side of San Francisco Bay to Bolinas, Marin County. 

 Vertical range from sea level up to hardly 500 feet; zonal range 

 Lower and Upper Sonoran. 



