Marginal Records.—Oregon: Mt. Hood; type locality; Detroit.
Sorex vagrans setosus Elliott
Sorex setosus Elliott, Field Columb. Mus. Publ. 32, zool. ser. 1:274, May 19, 1899.
Sorex obscurus setosus, Jackson, Proc. Biol. Soc. Washington, 31:127, November 29, 1918.
Type.—Adult male, skin and skull; No. 6213/238, Chicago Nat. Hist. Mus.; obtained on August 18, 1898, by D. G. Elliott from Happy Lake, Olympic Mts., Clallam Co., Washington.
Range.—Washington from the Cascades west; southwestern British Columbia west of 120° W Longitude north to Lund.
Diagnosis.—Size medium for the species; average and extreme measurements of 20 specimens from the Olympic Mountains, Washington, are: total length, 117.3 (107-125); tail, 49.8 (41-54); hind foot, 13.4 (12-14). Color dark in both summer and winter.
Comparisons.—For comparison with permiliensis see account of that subspecies. Darker, longer-tailed, and somewhat larger cranially than S. v. obscurus with which it intergrades in southwestern British Columbia. Smaller in all dimensions, but much the same color as S. v. longicauda with which it intergrades along the British Columbian coast north of Lund. Larger, darker, less reddish, and longer-tailed than the sympatric S. v. vagrans.
Remarks.—S. v. setosus lives mostly in forests. According to Dalquest (1948:139) it is commonest at high altitudes in western Washington. In the Hudsonian Life-zone where shrew habitat is more restricted and marginal than it is at lower altitudes in the humid part of Washington, setosus might be expected to compete with S. v. vagrans and to supplant it. Records of occurrence in the Olympic Mountains suggest a degree of such separation there.
Specimens examined.—Total number, 135.