2. Geographic Variation in the Harvest Mouse. Reithrodontomys megalotis, on the Central Great Plains and in Adjacent Regions. By J. Knox Jones, Jr., and B. Mursaloglu. Pp. 9-27, 1 figure in text. July 24, 1961.
3. Mammals of Mesa Verde National Park, Colorado. By Sydney Anderson. Pp. 29-67, pls. 1 and 2, 3 figures in text. July 24, 1961.
More numbers will appear in volume 14.