You are here
قراءة كتاب Two New Moles (Genus Scalopus) from Mexico and Texas
تنويه: تعرض هنا نبذة من اول ١٠ صفحات فقط من الكتاب الالكتروني، لقراءة الكتاب كاملا اضغط على الزر “اشتر الآن"
Two New Moles (Genus Scalopus) from Mexico and Texas
Two New Moles (Genus Scalopus)
from Mexico and Texas
BY
ROLLIN H. BAKER
University of Kansas Publications
Museum of Natural History
Volume 5, No. 2, pp. 17-24
February 28, 1951
University of Kansas
LAWRENCE
1951
University of Kansas Publications, Museum of Natural History
Editors: E. Raymond Hall, Chairman, Edward H. Taylor,
A. Byron Leonard, Robert W. Wilson
Volume 5, No. 2, pp. 17-24
February 28, 1951
University of Kansas
Lawrence, Kansas
PRINTED BY
FERD VOILAND, JR., STATE PRINTER
TOPEKA, KANSAS
1951
23-6626
Two New Moles (Genus Scalopus)
from Mexico and Texas
BY
ROLLIN H. BAKER
In the spring of 1950, a field party from the University of Kansas Museum of Natural History including J. R. Alcorn, W. J. Schaldach, Jr., George Newton, and the author collected mammals in the Mexican state of Coahuila. A few days were spent in the Sierra del Carmen. One morning when examining sets for pocket gophers in these mountains, Alcorn found a mole caught in one of the traps. Subsequent examination discloses that this specimen belongs to a heretofore unknown species which may be named and described as follows:
Scalopus montanus new species
Type.—Male, adult, skin and skull plus body skeleton; no. 35668, Univ. Kansas Mus. Nat. Hist.; Club Sierra del Carmen, 2 mi. N and 6 mi. W Piedra Blanca, Coahuila, Mexico; 7 April 1950; obtained by J. R. Alcorn, original no. 11093.
Range.—Known only from the type locality; probably found in other localities in the Sierra del Carmen of northern Coahuila, Mexico.
Diagnosis.—Size medium and slender for the genus (see measurements); tail medium in length, sparsely covered with whitish hairs; claws of forefeet slender; upper parts near (h) Buffy Brown (capitalized color terms after Ridgway, Color Standards and Color Nomenclature, Washington, D. C., 1912), with slight rufous wash on top of head; underparts resemble upper parts but slightly paler with longitudinal band of near (14) Sudan Brown extending from chin posteriorly to and around base of tail, less intense on breast; skull small, arched, and relatively slender especially across mastoidal region; posterior part of cranium depressed; foramen magnum low when viewed from rear; external pterygoid region not greatly expanded; teeth small, especially upper third molar.
Comparison.—From Scalopus aquaticus, of which ten subspecies have been seen including those of significant geographic position, S. montanus differs in: Skull slenderer, less angular and relatively narrower across mastoidal region; cranium arched with hind part flattened; external pterygoid region less expanded; teeth relatively small, especially last upper molar. From S. inflatus, known to me from Jackson's description (N. Amer. Fauna, 38:53-54, pls. 2, 3, September 30, 1915), S. montanus differs in: Skull less angular and slenderer, prelachrymal region not inflated; zygomata slenderer.
Remarks.—S. montanus is known from a single specimen, which represents the second known occurrence of the genus Scalopus in Mexico. The other occurrence is that of S. inflatus in the state of Tamaulipas. S. montanus is geographically isolated in mountainous country from other species of Scalopus. Ten of the recognized