BY J. KNOX JONES, JR. University of Kansas Lawrence 1958 University of Kansas Publications, Museum of Natural History Editors: E. Raymond Hall, Chairman, Henry S. Fitch, Robert W. Wilson Volume 9, No. 13, pp. 385-388 Published May 12, 1958 University of Kansas Lawrence, Kansas PRINTED IN THE STATE PRINTING PLANT TOPEKA, KANSAS 1958 27-3033 BY J. KNOX JONES, JR. In the autumn of 1952, I obtained a southern bog lemming, Synaptomys cooperi , at Rock Creek State Fish Hatchery, Dundy County, in extre

Type. —Adult female, skin and skull, University of Kansas Museum of Natural History no. 51617, from Rock Creek State Fish Hatchery, 5 mi. N, 2 mi. W Parks, Dundy County, Nebraska; obtained November 1, 1952, by J. Knox Jones, Jr., original no. 995. Distribution. —Known only from the type locality. Diagnosis. —Size large for the species, both externally and cranially; dorsal pelage dark; nasals broadly flared anteriorly (especially broad in relation to nasal length); auditory bullae small; molarif