ÿThis volume includes fourteen research articles on Canadian Coleoptera, mainly on the families Staphylinidae, Leiodidae, Histeridae, Nitidulidae, Cucujidae, Phalacridae, Silvanidae, Laemophloeidae, Tetratomidae, several aquatic groups, and others. An introductory editorial traces the history of scientific research and indicates areas of future inquiry. The papers address various questions with respect to the distribution, dispersal, zoogeographical status, phenology, and bionomics of Canadian Coleoptera, the role of saproxylic beetles in forest ecosystems, and invasive species in native habitats. The answers to these questions have important economic and environmental consequences. The book is addressed to coleopterists, ecologists, biogeographers, and conservationists.