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A New Piñon Mouse (Peromyscus truei) from Durango

A New Pinon Mouse (Peromyscus truei) from Durango, Mexico

BY

ROBERT B. FINLEY, JR.

University of Kansas Publications Museum of Natural History

Volume 5, No. 20, pp. 263-267 May 23, 1952

University of Kansas LAWRENCE 1952

UNIVERSITY OF KANSAS PUBLICATIONS, MUSEUM OF NATURAL HISTORY

Editors: E. Raymond Hall, Chairman, A. Byron Leonard, Edward H. Taylor, Robert W. Wilson

Volume 5, No. 20, pp. 263-267 May 23, 1952

UNIVERSITY OF KANSAS Lawrence, Kansas

PRINTED BY FERD VOILAND, JR., STATE PRINTER TOPEKA, KANSAS 1952

24-2794

A New Pinon Mouse (Peromyscus truei) from Durango, Mexico

BY

ROBERT B. FINLEY, JR.

The extensive collection of Mexican mammals made by Mr. J. R. Alcorn for the University of Kansas Museum of Natural History contains fourteen pinon mice from lava rocks eight miles northeast of the city of Durango, Mexico. These mice are all much darker than the pinon mice, _Peromyscus truei gentilis_, of adjoining areas in Durango and Zacatecas and show a superficial resemblance to the widespread _P. t. gratus_ which occurs 450 miles to the southeast. Morphological differences from _P. t. gratus_, as well as geographic considerations (see remarks), make desirable the recognition of the lava-dwelling pinon mice from Durango as a distinct subspecies.

All specimens examined of subspecies compared with the series of pinon mice from northeast of Durango are in the University of Kansas Museum of Natural History. Capitalized color names and designators are of Maerz and Paul, A Dictionary of Color, McGraw Hill Book Co., New York, 1930.

I wish to acknowledge generous financial aid from the Kansas University Endowment Association which made possible the field work by Mr. Alcorn in Mexico.

This heretofore unknown subspecies is characterized below and may be known as:

=Peromyscus truei erasmus= subsp. nov.

_Type._--Mus. Nat. Hist., Univ. Kansas, no. 34417, young adult female, skin and skull; from eight miles northeast of Durango, 6200 feet, Durango, Mexico; collected 16 August 1949 by J. R. Alcorn, original number 10255.

_Range._--Known only from the type locality.


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