Leszek A. Bledzki, PhD Department of Biological SciencesMount Holyoke CollegeMassachusetts, USAE-mail: lbledzki@mtholyoke.edu Jan Igor Rybak, PhD Department of HydrobiologyWarsaw University, Poland(Deceased)

• Introduction.- Ecological features, coefficients and equations.- Basic taxonomy.- Methods.- References.- Morphological Abbreviations.- Introduction to Cladocera.- Cladocera morphology.- Classification.- Characteristics of orders and families with a list of European genera and species Alphabetical list of species with notes on synonyms, taxonomy, distribution and ecology.-References.- Key to Cladocera.- Morphological Abbreviations.- Introduction to Copepoda.- Copepoda morphology.- Classification.- Characteristics of orders and families with a list of European genera and species.- Alphabetical list of species.- References.- Key to Calanoida.- Index.

Leszek A. Bledzki, PhD Department of Biological SciencesMount Holyoke CollegeMassachusetts, USAE-mail: lbledzki@mtholyoke.edu Jan Igor Rybak, PhD Department of HydrobiologyWarsaw University, Poland(Deceased)

• Introduction.- Ecological features, coefficients and equations.- Basic taxonomy.- Methods.- References.- Morphological Abbreviations.- Introduction to Cladocera.- Cladocera morphology.- Classification.- Characteristics of orders and families with a list of European genera and species Alphabetical list of species with notes on synonyms, taxonomy, distribution and ecology.-References.- Key to Cladocera.- Morphological Abbreviations.- Introduction to Copepoda.- Copepoda morphology.- Classification.- Characteristics of orders and families with a list of European genera and species.- Alphabetical list of species.- References.- Key to Calanoida.- Index.

Leszek A. Bledzki, PhD Department of Biological SciencesMount Holyoke CollegeMassachusetts, USAE-mail: lbledzki@mtholyoke.edu Jan Igor Rybak, PhD Department of HydrobiologyWarsaw University, Poland(Deceased)

• Introduction.- Ecological features, coefficients and equations.- Basic taxonomy.- Methods.- References.- Morphological Abbreviations.- Introduction to Cladocera.- Cladocera morphology.- Classification.- Characteristics of orders and families with a list of European genera and species Alphabetical list of species with notes on synonyms, taxonomy, distribution and ecology.-References.- Key to Cladocera.- Morphological Abbreviations.- Introduction to Copepoda.- Copepoda morphology.- Classification.- Characteristics of orders and families with a list of European genera and species.- Alphabetical list of species.- References.- Key to Calanoida.- Index.