190 I an stsity of C xUfsmia FuiU: attorn i.\ Zoclcgy I ^ ; ■'■■ l « 



Range. — Specimens are at hand from the following localities, 

 all in the Transition zone of the central Sierra Nevada : Dutch 

 Flat, 3,400 feet altitude, Placer County; Glen Alpine Springs, 

 7,000 feet, Eldorado County ; Yosemite Valley, 4,000 feet, Mari- 

 posa County. There is also in the Museum a specimen (no. 

 11347) from Parker Creek, 5,500 feet, Warner Mountains, 

 Modoc County, California, which is for the time being referred 

 to the subspecies here characterized. 



Sorex pacificus Baird 

 Pacific Shrew 



Original description. — Sorex pacificus Baird, in Coues (1877), p. 650. 



Type locality. — Fort TJmpqua, mouth of Umpqua Eiver, Douglas County, 

 Oregon. 



Coloration. — Both above and below rich warm prout 's brown inclining 

 towards cinnamon-rufous. The brightest color is exhibited by August 

 specimens; in winter pelage the shade is darker, approaching seal 

 brown dorso-posteriorly. In both pelages the lower surface is slightly 

 paler than the dorsal; fur at base, blackish slate; the tail is seal 

 brown, unicolor; feet (dried), wood brown; whiskers plumbeous. 



Cranium. — Very large and massive; braincase nearly straight-topped in 

 lateral profile, relatively flattened. See figure 6 and table of cranial 

 measurements. 



Measurements.- — Forty-five specimens, from Humboldt County, measure, 

 average and extremes: Total length 146 mm. (135-159), tail vertebrae 

 61.6 (50-70), hind foot 17.5 (16-19). 



Range. — Upland riparian association in the Transition zone 

 of (he northern humid coast belt; not so far discovered south of 

 San Francisco Bay, and not numerous south of the Humboldt 

 Bay region. The southernmost record station is Point Reyes, 

 Marin County, whence Merriam (1895, p. 87) reports two speci- 

 mens. Elliot (1907, p. 472) records specimens from Mendocino, 

 Mendocino County; Requa and Crescent City, Del Norte County. 

 The series in the California Museum of Vertebrate Zoology comes 

 altogether from Humboldt County: Eureka, Fair Oaks, Ferndale, 

 Cuddeback, Areata, and Trinidad. 



