We are obliged to J. R. Alcorn and William L. Cutter for collecting many of the specimens used by us, to the Watkins Fund of the Kansas University Endowment Association and to the American Heart Fund for financial assistance with collecting the specimens, to the National Science Foundation for financial assistance with study of the specimens in the Museum, to William H. Burt of the University of Michigan, and to Stanley P. Young, Richard P. Manville and Viola S. Schantz of the Biological Surveys Collection of the United States Fish and Wildlife Service for lending certain specimens.
Transmitted October 1, 1959.
28-1243