THE PRAIRIE NATURALIST Volume 23, No. 2. June 1991

Paul B. Kannowski, Editor Nikki R. Sea bloom, Assistant Editor Douglas H. Johnson, Book Review Editor CONTENTS SMALLMOUTH BASS SIZE STRUCTURE AND CATCH RATES IN FIVE SOUTH DAKOTA LAKES AS DETERMINED FROM TWO SAMPLING GEARS ▪ C. L. Milewski and D. W. Willis REPRODUCTION BY FISHES IN A HEADWATER STREAM FLOWING INTO GRAYROCKS RESERVOIR, WYOMING ▪ W. A. Hubert and D. T O’Shea ENVENOMATION AND ACQUISITION OF CHEMICAL INFORMATION BY PRAIRIE RATTLESNAKES ▪ D. Chiszar, C. Hobika, H. M. Smith, and J. Vidaurri MOVEMENTS AND HABITAT USE BY WILD TURKEY HENS WITH BROODS IN A GRASSLAND-WOODLAND MOSAIC IN THE NORTHERN PLAINS ▪ K. S. Day, L. D. Flake, and W. L. Tucker EARTH-FILLED CULVERTS AS NEST SITES FOR WATERFOWL ▪ I. J. Ball and S. K. Ball CHRISTMAS BIRD COUNTS FOR NORTH DAKOTA - 1990 ▪ R. N. Randall IDENTIFICATION OF MAMMALIAN PREDATORS AT ARTIFICIAL WATERFOWL NESTS ▪ J. T Trevor, R. W. Seabloom, and R. D. Sayler RANGE EXTENSION, DESCRIPTION, AND HABITAT FOR HAPLOPAPPUS MACRONEMA SSP. LlNEARIS (ASTERACEAE) ▪ C. Winkler and C. L. Wambolt NOTES New Distribution Records for Bruchophagus caraganae (Hymenoptera: Eurytomidae) in the Northern Great Plains ▪ A. Boe and B. McDaniel New Host and Distribution Records for Uscana semifumipennis (Hymenoptera: Trichogrammatidae), an Egg Parasite of Bruchid Beetles ▪ A. Boe and B. McDaniel Mailing Date: July 18, 199