Produced by Chris Curnow, Joseph Cooper and the Online Distributed Proofreading Team at http://www.pgdp.net A New Pocket Gopher (Genus Thomomys) From Wyoming and Colorado BY E. RAYMOND HALL University of Kansas Publications Museum of Natural History Volume 5, No. 13, pp. 219-222 December 15, 1951 University of Kansas LAWRENCE 1951 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. 13, pp. 219-222 December 15, 1951 UNIVERSITY OF KANSAS Lawrence, Kansas PRINTED BY FERD VOILAND, JR., STATE PRINTER TOPEKA, KANSAS 1951 24-1359 A New Pocket Gopher (Genus Thomomys) from Wyoming and Colorado By E. RAYMOND HALL Among small mammals accumulated, from Wyoming, in the Museum of Natural History of the University of Kansas, specimens of the wide-spread species _Thomomys talpoides_ are abundantly represented. Subspecific names are available for most of these, but specimens from the Sierra Madre Mountain Range of Wyoming and Colorado prove upon comparison to pertain to an heretofore unnamed subspecies which may be described and named as follows: #Thomomys talpoides meritus# new subspecies _Type._--Male, adult, skull and skin, no. 25628 Mus. Nat. Hist. Univ. Kansas; from 8 mi. N and 19-1/2 mi. E Savery, 8800 ft., Carbon County, Wyoming; obtained on July 19, 1948, by George M. Newton; original no. 4. _Range._--Sierra Madre Mountain Range of southern Wyoming and northern Colorado. _Diagnosis._--Size small (see measurements); color dark, upperparts in worn pelage of July darker than (near, _n_) Raw Umber (capitalized terms are of Ridgway, Color Standards and Color Nomenclature, Washington, D. C., 1912) and in fresh pelage of August between (near, 16') Prout's Brown and Mummy Brown; skull small; relative to basilar length, skull narrow across rostrum, zygomata and mastoids; nasals short and posteriorly truncate; premaxillae extending behind nasals; temporal lines faint and divergent posteriorly.