Incluye bibliografías e índices. CONTENIDO: Introduction to Freshwater Invertebrates / James H. Thorp, Alan P. Covich -- An Overview of Freshwater Habitats / James H. Thorp, Alan P. Covich -- Protozoa / Wiliam D. Taylor, Robert W. Sanders -- Porifera / Thomas M. Frost, Henry M. Reiswig, Anthony Ricciardi -- Cnidaria / Lawrence B. Slobodkin, Patricia E. Bossert -- Flatworms: Turbellaria and Nemertea / Jurek Kolasa -- Gastrotricha / David Strayer, William D. Hummon -- Phylum Rotifera / Robert Lee Wallace, Terry W. Snell -- Nematoda and Nematomorpha / George O. Poinar -- Mollusca: Gastropoda / Kenneth M. Brown -- Mollusca: Bivalvia / Robert F. McMahon, Arthur E. Bogan -- Annelida: Oligochaeta, Including Branchiobdellidae / Ralph O. Brinkhurst, Stuart R. Gelder -- Annelida: Euhirudinea and Acanthobdellidae / Ronald W. Davies, Fredric R. Govedich --Bryozoans / Timothy S. Wood -- Tardigrada / Diane R. Nelson -- Water Mites (Hydrachnida) and Other Arachnids / Ian M. Smith, Bruce P. Smith, David R. Cook -- Diversity and Classification of Insects and Collembola / William L. Hilsenhoff -- Aquatic Insect Ecology / Anne E. Hershey, Gary A. Lamberti -- Introduction to the Subphylum Crustacea / Alan P. Covich, James H. Thorp -- Ostracoda / L. Denis Delorme -- Cladocera and Other Branchiopoda / Stanley I. Dodson, David G. Frey -- Copepoda / Craig E. Williamson, Janet W. Reid -- Decapoda / H. H. Hobbs III -- Glossary -- Subject Index -- Taxonomic Index.