Produced by Chris Curnow, Joseph Cooper, The Internet Archive for some images and the Online Distributed Proofreading Team at http://www.pgdp.net Two New Meadow Mice from Michoacan Mexico BY E. RAYMOND HALL University of Kansas Publications Museum of Natural History Volume 1, No. 21, pp. 423-427, 6 figs. in text December 24, 1948 University of Kansas LAWRENCE 1948 UNIVERSITY OF KANSAS PUBLICATIONS, MUSEUM OF NATURAL HISTORY Editors: E. Raymond Hall, Chairman, A. Byron Leonard, Edward H. Taylor Volume 1, No. 21, pp. 423-427, 6 figs. in text December 24, 1948 UNIVERSITY OF KANSAS Lawrence, Kansas PRINTED BY FERD VOILAND, JR., STATE PRINTER TOPEKA, KANSAS 1948 22-3717 Two New Meadow Mice from Michoacan, Mexico By E. RAYMOND HALL In preparing a list of kinds of mammals of which specimens have been saved from the Mexican state of Michoacan, two heretofore unrecognized subspecies of the Mexican 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.; 3-1/2 mi. S Patzcuaro, 7,900 ft., Michoacan, Mexico; 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. _Comparisons._--Among named subspecies of _Microtus mexicanus_, _M. m. fundatus_ most closely resembles _M. m. mexicanus_ but differs as follows: Larger in all parts measured; pelage with slightly less buffy color and with the buffy color that is present of a slightly lighter tint; posterior two-thirds of premaxillary border of each nasal concave rather than straight; posterior border of orbit forming more acute angle with sagittal plane of posterior part of skull; superior outline of nasals straight rather than depressed in posterior part; tympanic bullae more inflated both in vertical and horizontal planes.