Two New Meadow Mice from Michoacán Mexico

by E. Raymond Hall

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Two New Meadow Mice from Michoacán, Mexico

By

E. RAYMOND HALL

In preparing a list of kinds of mammals of which specimens have been saved from the Méxican state of Michoacán, two heretofore unrecognized subspecies of the Méxican meadow mouse, Microtus mexicanus, have been found. Names for these and descriptions are given below.

Microtus mexicanus fundatus new subspecies

Type.—Male, adult, skin and skull; No. 100637, Univ. California Mus. Vert. Zool.; 3½ mi. S Pátzcuaro, 7,900 ft., Michoacán, México; March 9, 1943; obtained by E. R. Hall, original no. 5882.

Range.—Known only from the vicinity of the type locality.

Diagnosis.—Size large (see measurements); color brown overlain with cinnamon; nasals expanded distally with premaxillary borders concave laterally; posterior border of orbit inclined posterolaterally; preorbital region and interparietal region depressed; incisive foramina narrow; zygomatic arches parallel; tympanic bullae much inflated.