368 NORTH AMERICAN FAUNA [No. 55 



SOREX PREBLEI JACKSON 

 PEBBLE'S SHREW 



Sorex prebtei Jackson, Wash. Acad. Sci. Jour., v. 12, p. 263, 1922. 



Type. Collected at Jordan Valley, Malheur County, Oreg., July 3, 1915, by 

 Edward A. Preble. 



General characters. Smallest of known Oregon shrews, only known repre- 

 sentative in the State of the Sorex cinereus group, and the only one found there 

 except merriami with the fourth unicuspid upper tooth smaller than the third. 

 Color in summer pelage, upper parts dark brownish gray or hair brown ; lower 

 parts silvery gray ; feet buf f y ; tail light buff below, dark brown above. 



Measurements. Of type, adult male: Total length, 95 mm; tail, 36; foot, 

 11. Of female from Diamond, Oreg. : 77 ; 28 ; 10. 



Distribution and habitat. The 3 known specimens of this little 

 shrew are the type from Jordan Valley, 1 from near Diamond at the 

 north end of the Steens Mountains, and 1 from Sled Springs, in the 

 Blue Mountains, 25 miles north of Enterprise (fig. 90). It probably 

 has a somewhat interrupted range in the mountains and high country 

 of eastern Oregon. In Jordan Valley Preble collected the type in 

 a trap set near a willow-fringed creek out on the big Transition Zone 

 meadows. 



Near Diamond, at the north end of the Steens Mountains, Sheldon 

 caught one in the marsh not far from the cold stream that comes out 

 of the Kiger gorge. The meadow plants indicated Transition Zone 

 with a mixture of Canadian Zone species, although the surrounding 

 dry slopes were pure Upper Sonoran. The specimen taken by Cant- 

 well at Sled Springs in the northern part of the Blue Mountains 

 was without notes, but probably came from the little marsh among 

 the yellow pines of that vicinity. 



ORDER CHIROPTERA: WINGED MAMMALS BATS 



Family VESPERTILIONIDAE : Common Northern Bats 



MYOTIS LUCIFUGUS ALASCENSIS MILLEB 



ALASKA LITTLE BROWN BAT 



Myotis. lucifuffus alascensis Miller, North Amer. Fauna No. 13, p. 63, 1897. 



Type. Collected at Sitka, Alaska, by Clark P. Streator, August 5, 1895. 



General characters. Size of typical Myotis lucifugus but very much darker 

 in coloration, often appearing sooty or blackish brown. Underfur blackish at 

 base but tips of outer fur glossy dark brown, mummy brown of Ridgway ; ears 

 and naked membranes blackish. Immature specimens duller and more sooty 

 in coloration. 



Measurements. Adult male from McKenzie Bridge: Total length, 85 mm; 

 tail, 38 ; foot, 10 ; ear (dry) , 12. Adult female from Blue River : 89 ; 39 ; 10 ; 12. 



Distribution and habitat. Humid Northwest coast country from 

 southern Alaska to northwestern California and extreme northwest- 

 ern Montana. In Oregon mainly west of the Cascades or along the 

 east base. There are specimens from Mohler, Elaine, Tillamook 

 County, McKenzie Bridge, Blue River, and La Pine (fig. 91). Three 

 from Bend are slightly paler than typical. One listed from Butte 

 Creek, in the Blue Mountains of southeastern Washington, close to 

 the Oregon line, has not been seen by the writer. 



This dark Northwest coast form of the wide-ranging little brown 

 bat is generally found in a forested country and apparently is not 



