_Sorex alascensis alascensis_, Miller, U. S. Nat. Mus. Bull., 79:16, December 31, 1912. _Type._--Adult female, skin and skull; No. 73539, U. S. Biol. Surv. Coll.; obtained on July 10, 1895, by C. P. Streator from Yakutat, Alaska. _Range._--The coast of southern Alaska from the vicinity of Juneau west to include eastern part of the Kenai Peninsula. _Diagnosis._--Size medium for the species; average and extreme measurements of 9 specimens from 9 mi. W and 4 mi. N of Haines, Alaska, are: total length, 110 (104-128); tail, 45.4 (41-52); hind foot, 14 (14-14). Color grayish brown. _Comparisons._--For comparison with _S. v. longicauda_ and _S. v. elassodon_ see accounts of those subspecies. Resembles _S. v. obscurus_ in color but differs in larger skull, longer hind foot and in somewhat darker color. Larger and darker than _S. v. shumaginensis_; the two intergrade near the base of the Kenai Peninsula. _Remarks._--This subspecies is transitional between the large, usually dark subspecies of the southeastern Alaskan and British Columbian coast and islands, and the smaller, paler subspecies of western and interior Alaska. There seem to be no sharp breaks between _alascensis_ and _shumaginesis_. North of Haines, Alaska, size of shrews decreases in a short distance across a narrow intergradational zone between _alascensis_ and _obscurus_. Throughout most of its range _S. v. alascensis_ occurs with _Sorex cinereus_. _Specimens examined._--Total number, 88. ALASKA: Orca, 1 BS; Montague Island, Prince William Sound, 2 BS; Yakutat, 8 BS; north shore Yakutat Bay, 2 BS; Yakutat Bay, 1 BS; E side Chilkat River, 100 ft., 9 mi. W and 4 mi. N Haines, 12 KU; 1 mi. S Haines, 5 ft., 10 KU; 7 mi. SSE Haines, 10 ft., 2 KU; N end Sullivan Island, 10 ft., 6 KU; SE end Sullivan Island, 10 ft., 2 KU; Glacier Bay, 3 BS; Mendenhall River, 1 BS; Juneau, 36 BS. BRITISH COLUMBIA: Sheslay River, 1 AMNH; headwaters Sheslay River, 1 AMNH. _Marginal Records._--ALASKA: Valdez Narrows, Prince William Sound (Jackson, 1928:128); north shore Yakutat Bay; east side Chilkat River, 100 ft., 9 mi. W and 4 mi. N Haines. BRITISH COLUMBIA: Sheslay River (Jackson, 1928:128). ALASKA: Juneau; Glacier Bay; Montague Island, Prince William Sound (ibid.); Port Nell Juan (ibid.). =Sorex vagrans shumaginensis= Merriam _Sorex alascensis shumaginensis_ Merriam, Proc. Washington Acad. Sci., 2:18, March 14, 1900. [_Sorex glacialis_] _shumaginensis_, Elliott, Field Columb. Mus. Publ. 45, zool. ser. 2:373, 1901. _Sorex obscurus shumaginensis_, Allen, Bull. American Mus. Nat. Hist., 16:228, July 12, 1902. _Type._--Adult male, skin and skull; No. 97993, U. S. Biol. Surv. Coll.; obtained on July 17, 1899, by De Alton Saunders from Popof Island, Shumagin Islands, Alaska. (Measured by C. Hart Merriam and numbered 2210 in A. K. Fisher's catalog.)