Produced by Chris Curnow, Joseph Cooper and the Online Distributed Proofreading Team at http://www.pgdp.net A New Pocket Gopher (Thomomys) and A New Spiny Pocket Mouse (Liomys) from Michoacan, Mexico BY E. RAYMOND HALL AND BERNARDO VILLA R. University of Kansas Publications Museum of Natural History Volume 1, No. 14, pp. 249-256, 6 figs. in text July 26, 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. 14, pp. 249-256, 6 figs. in text July 26, 1948 UNIVERSITY OF KANSAS Lawrence, Kansas PRINTED BY FERD VOILAND, JR., STATE PRINTER TOPEKA, KANSAS 1948 22-3338 A New Pocket Gopher (Thomomys) and a New Spiny Pocket Mouse (Liomys) from Michoacan, Mexico By E. RAYMOND HALL and BERNARDO VILLA R. A series of 17 pocket gophers of the species _Thomomys umbrinus_ obtained in 1943 from points 3, 4 and 5 miles south of Patzcuaro proves upon comparison to be an hitherto unrecognized subspecies which is described and named as follows: #Thomomys umbrinus pullus#, new subspecies _Type._--Male, adult, skin and skull; No. 100151, Univ. California Mus. Vert. Zool.; 5 mi. S Patzcuaro, 7800 ft., Michoacan, Mexico; March 10, 1943; obtained by Hubert H. Hall, original No. 117. _Range._--Known only from 3 to 5 miles south of Patzcuaro, Michoacan. _Diagnosis._--Size small (see measurements); color black or between Cinnamon-Brown and Snuff Brown; distal half of tail whitish and all of tail whitish in one specimen; lambdoidal crests perpendicular to sagittal plane of skull; posteroventral face of tympanic bulla rugose; jugal vertical (flat surface not oblique); interpterygoid space truncate at apex with sides curved outward (see figure).