Vol. 7. *1. Mammals of Kansas. By E. Lendell Cockrum. Pp. 1-303, 73 figures in text, 37 tables. August 25, 1952. 2. Ecology of the opossum on a natural area in northeastern Kansas. By Henry S. Fitch and Lewis L. Sandidge. Pp. 305-338, 5 figures in text. August 24, 1953. 3. The silky pocket mice (Perognathus flavus) of Mexico. By Rollin H. Baker. Pp. 339-347, 1 figure in text. February 15, 1954. 4. North American jumping mice (Genus Zapus). By Philip H. Krutzsch. Pp. 349-472, 47 figures in text, 4 tables. April 21, 1954. More numbers will appear in Volume 7. * * * * * Transcriber's Notes All obvious typos corrected. In Table 5 on the Swan Lake row, the Mean value for the Palatal length was corrected to 10.1 mm as there were only two values averaged (10.0 and 10.2). Abbreviation inconsistencies for mountain(s) were retained. Where a publication name contains an alternate spelling of a word, it was retained (example, Athabaska). The author Bernardo Villa-Ramirez is sometimes listed with the hyphen and sometimes without. For consistancy, they were standardized with a hyphen. Typographical Corrections Page(s) Correction ========= ====================== 380 dention => dentition 412, 414 Eldorado => El Dorado 417 Sitkine River, at Glenoria => Stikine River, at Glenora End of the Project Gutenberg EBook of North American Jumping Mice (Genus Zapus), by Philip H. Krutzsch