1913 J Grinnell: Calif ornian Species of Sorex 189 



Range. — Upland riparian association in the Transition and 

 high Upper Sonoran zones of the humid coast belt. Specimens in 

 the Museum represent the following localities: Monterey, Mon- 

 terey County; Stevens Creek Canyon, Santa Clara County; 

 Berkeley, Alameda County; Nicasio and Point Reyes, Marin 

 County; Sherwood, Mendocino County; Eureka, Fair Oaks, 

 Areata and Trinidad, Humboldt County. Merriam (1895, p. 79) 

 records specimens from the following additional localities : Cres- 

 cent City, Del Norte County ; Boulder Creek, Santa Cruz County ; 

 Morro and San Luis Obispo, San Luis Obispo County. The latter 

 two are the southernmost record stations for the species. The 

 species has also been recorded from Portola and La Honda, San 

 Mateo County (Allen, 1S96. p. 269) ; and I have examined speci- 

 mens (in collection of C. P. Streator) taken at Santa Cruz, 

 Santa Cruz County. Elliot (1907, p. 471) records specimens, 

 supposedly of this form, from : Mount Hamilton, Santa Clara 

 County; Petaluma, Sonoma County; Mendocino, Mendocino 

 County; also from five localities previously enumerated. 



In consideration of the above data it would appear that Sorex 

 montereyensis is, within its well-defined habitat, abundant, and 

 more easily trapped than any others of the shrews of west- 

 central California. 



Sorex montereyensis mariposae, ssp. nov. 

 Yosemite Shrew 



Type.— Skin and skull, ? young adult; no. 12.979, Mus. Vert. Zool.; 

 Yosemite Valley at 4,000 feet altitude, Mariposa County, California; 

 May 27, 1911; collected by J. and H. W. Grinnell; orig. no. 673. 



Diagnostic characters. — Closely similar to Sorex montereyensis mon- 

 tereyensis in all characters; differs from this form in paler, distinctly 

 grayer coloration. 



Coloration. — In summer pelage, above hair brown mixed with drab gray; 

 ears and top of head clear hair brown; lower surface drab gray with 

 a silvery sheen; fur at base slate-gray; tail bicolor, drab above, dull 

 white beneath; feet drab; whiskers plumbeous. 



Measurements of type. — Total length 121 mm., tail vertebrae 51, hind 

 foot 14, greatest length of skull 19.3, width of braincase 9.3, height 

 of braincase 5.5. 



