Sorex obscurus elassodon, Elliott, Field Columb. Mus. Publ. 105, zool. ser. 6:450, 1905.
Type.--Adult male, skin and skull; No. 100597, U. S. Biol. Surv. Coll.; obtained on June 13, 1900, by W. H. Osgood from Cumshewa Inlet, near old Indian village of Clew, Moresby Island, Queen Charlotte Islands, British Columbia.
Range.--Alaskan and British Columbian islands from Admiralty Island south to Moresby Island.
Diagnosis.--Size medium; average and extreme measurements of 4 from the type locality are: total length, 126, (119-131); tail, 53.5 (52-55); hind foot, 13.8 (13-14). Color dark.
1. Sorex vagrans malitiosus 2. Sorex vagrans elassodon 3. Sorex vagrans prevostensis 4. Sorex vagrans calvertensis 5. Sorex vagrans insularis 6. Sorex vagrans longicauda 7. Sorex vagrans obscurus ]
Comparisons.--Smaller with relatively smaller tail and hind feet than S. v. longicauda, but resembling it in color. Smaller and paler than S. v. prevostensis with relatively narrower rostrum. Larger, darker, and with relatively longer tail than S. v. obscurus. Resembles S. v. alascensis but hind foot smaller and skull relatively narrower. Smaller than S. v. malitiosus.
Remarks.--In the northern part of its range S. v. elassodon occurs with Sorex cinereus. In the southern part it is the only shrew present.
Specimens examined.--Total number 93.
ALASKA: near Killisnoo, Admiralty Island, 2 BS; Kupreanof Island, 15 BS; Petersburg, Mitkof Island, 10 BS; Woewodski Island, 4 AMNH; Kasaan Bay, Prince of Wales Island, 18 BS.
BRITISH COLUMBIA: Cumshewa Inlet, Moresby Island, 25 BS; Massett, Graham Island, 6 BS; Queen Charlotte Islands, 13 AMNH.
Marginal Records.--ALASKA: Hawk Inlet, Admiralty Island (Jackson, 1928:131); Kupreanof Island; Mitkof Island; St. John Harbor, Zarembo Island (Jackson, 1928:131); Kasaan Bay, Prince of Wales Island; Duke Island (Jackson, 1928:131). BRITISH COLUMBIA: Massett, Graham Island, Queen Charlotte Islands; type locality; Langara Island, Queen Charlotte Islands (Jackson, 1928:131). ALASKA: Forrester Island (ibid.); Rocky Bay, Dall Island (ibid.); Shakan (really on Kosciusko Island) (ibid.); Point Baker (ibid.); Kuiu Island (ibid.); Port Conclusion, Baranof Island (ibid.).
=Sorex vagrans prevostensis= Osgood
Sorex longicauda prevostensis Osgood, N. Amer. Fauna, 21:35, September 26, 1901.
Sorex obscurus prevostensis, Elliott, Field Columb. Mus. Publ. 105, zool. ser. 6:450, 1905.
Type.--Adult male, skin and skull; No. 100618, U. S. Biol. Surv. Coll.; obtained on July 3, 1900, by W. H. Osgood from north end of Prevost Island (Kunghit Island on some maps) on coast of Houston Stewart Channel, Queen Charlotte Islands, British Columbia.
Range.--Known only from the type locality.
Diagnosis.--Size medium; measurements of two specimens from the type locality are: total length, 132, 142; tail, 53, 59; hind foot, 14, 15. Color dark.
Comparisons.--Larger and darker than S. v. elassodon. Resembles S. v. longicauda but darker, tail relatively somewhat shorter on the average and rostrum relatively slightly broader.
Specimens examined.--Total number, 14. BRITISH COLUMBIA: Prevost Island, Queen Charlotte Group, 14 BS.
=Sorex vagrans alascensis= Merriam
Sorex obscurus alascensis Merriam, N. Amer. Fauna, 10:76, December 31, 1895.
Sorex glacialis Merriam, Proc. Washington Acad. Sci., 2:16, March 14, 1900, type from Point Gustavus, east side of entrance to Glacier Bay, Alaska.
S. alascensis, Merriam, Proc. Washington Acad. Sci., 2:18, March 14, 1900.
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.
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