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Speciation of the Wandering Shrew · James S. Findley — chapter 16 of 21 · ~638 words · public domain

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Specimens examined.--Total number, 4. CALIFORNIA: San Bernardino Co.: type locality, 4 BS.

Marginal records.--CALIFORNIA: Camp Baldy, San Antonio Canyon (Jackson, 1928:124); type locality.

=Sorex vagrans halicoetes= Grinnell

Sorex halicoetes Grinnell, Univ. California Publ. Zool., 10:183, March 20, 1913.

Sorex vagrans halicoetes, Jackson, N. Amer. Fauna, 51:108, July 24, 1928.

Type.--Young adult male, skin and skull; No. 3638, Mus. Vert. Zool.; obtained on May 6, 1908, by Joseph Dixon from salt marsh near Palo Alto, Santa Clara Co., California.

Range.--Marshes in the southern part of San Francisco Bay, California.

Diagnosis.--Size small for the species; measurements of two topotypes are: total length, 105, 106; tail, 39, 40; hind foot, 12, 13. Upper parts in winter Chaetura Black or near Fuscous-Black; underparts brownish; upper parts in summer near (17'm) Mummy Brown; underparts with a decided buffy wash, near (15'd) Light Ochraceous Buff; rostrum relatively large; maxillary tooth-row relatively long; teeth relatively large.

Comparisons.--Darker ventrally, both summer and winter, than S. v. vagrans; slightly more reddish dorsally in summer pelage than S. v. vagrans, rostrum and teeth relatively larger; smaller externally than S. v. paludivagus, paler; skull longer, narrower cranially and broader rostrally.

Remarks.--This subspecies seems to be restricted to salt marshes where it occurs with Sorex ornatus.

Specimens examined.--Total number, 12. CALIFORNIA: San Francisco Co.: San Francisco, 4 BS. Alameda Co.: West Berkeley, 1 BS; Berkeley, 1 BS; Dumbarton Point, 1 KU. San Mateo Co.: San Mateo, 2 BS. Santa Clara Co.: Palo Alto, 3 BS.

Marginal records.--CALIFORNIA: Berkley, Elmhurst; Palo Alto; San Mateo.

=Sorex vagrans paludivagus= von Bloeker

Sorex vagrans paludivagus von Bloeker, Proc. Biol. Soc. Washington, 52:93, June 5, 1939.

Type.--Adult male, skin and skull; No. 5053, Los Angeles Museum of History, Science and Art, obtained on November 3, 1938, by Jack C. von Bloeker, Jr., from salt marsh at mouth of Elkhorn Slough, Moss Landing, Monterey Co., California, original no. 9456.

Diagnosis.--Size medium for the species; average and extreme measurements of 6 topotypes are: total length, 115 (113-118); tail, 46.5 (42-48); hind foot, 14.5 (14-15) (von Bloeker, 1939:94). In winter nearly black dorsally, deep mouse gray ventrally; in summer nearly as dark dorsally as in winter, hairs of venter tipped with Clove Brown; skull short, relatively broad cranially and relatively narrow rostrally.

Comparisons.--For comparison with S. v. halicoetes see account of that subspecies.

Remarks.--This subspecies, occurring at the limits of the range of the species, is uncommon in most collections. Seven specimens were available for the original description. The summer pelage is not completely described in the original description, but is stated to be darker than the winter pelage of S. v. vagrans, and must thus be considerably darker than the summer pelage of S. v. halicoetes. Two specimens in the Museum of Vertebrate Zoology, from San Gregario, referred by Jackson to S. v. halicoetes, were included in the present subspecies by von Bloeker.

Specimens examined.--None.

Records of occurrence (von Bloeker, 1939:94).--CALIFORNIA: San Mateo Co.: San Gregario. Monterey Co.: Seaside; mouth of Salinas River; Moss Landing.

Marginal records.--CALIFORNIA: San Gregario; Seaside.

=Sorex vagrans vancouverensis= Merriam

Sorex vancouverensis Merriam, N. Amer. Fauna, 10:70, December 31, 1895.

Sorex vagrans vancouverensis, Jackson, N. Amer. Fauna, 51:106, July, 1928.

Type.--Adult male, skin and skull; No. 71913, U. S. Biol. Surv. Coll.; obtained on May 10, 1895, by Clark P. Streator, from Goldstream, Vancouver Island, British Columbia.

Range.--Vancouver Island from Sayward south, and Bowen Island.

Diagnosis.--Size small for the species; average and extreme measurements of 6 specimens from Alberni Valley, Vancouver Island, are: total length, 106.5 (97-115); tail, 41.7 (40-43); hind foot, 12 (11-13) (Jackson, 1928:107). Ventral parts brownish, winter pelage reddish brown rather than grayish.

Comparisons.--Differs from S. v. vagrans in more brownish ventral parts and more brownish, rather than grayish, winter pelage; differs from the sympatric S. v. isolatus in shorter tail, shorter hind foot, more narrow skull, and smaller teeth.

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