University of Kansas
Lawrence, Kansas
PRINTED BY
FERD VOILAND, JR., STATE PRINTER
TOPEKA, KANSAS
1952
24-2794
A New Piñon 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 piñon mice from lava rocks eight miles northeast of the city of Durango, Mexico. These mice are all much darker than the piñon 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 piñon mice from Durango as a distinct subspecies.