In addition to mutants of Tribolium castaneum, this collection includes many lines isolated from the wild of this and other species of insect pests attacking stored products. It is housed at the U.S. Grain Marketing Research Laboratory. Requests should be directed to U.S. Grain Marketing Research Laboratory, U.S. Department of Agriculture, Agricultural Research Service, 1515 College Ave., Manhattan, Kans. 66502.
RICHARD W. BEEMAN
U.S. Department of Agriculture
Agricultural Research Service
Manhattan, Kans.
ROB DENELL
Division of Biology
Kansas State University
Manhattan, Kans.