This Atlas attempts to dispel some of the mystery surrounding stomatocysts, to facilitate the accurate identification of individual cyst morphotypes, and to encourage other workers to begin using these important indicators of environmental change. The terminology is outlined in detail. This is followed by detailed descriptions of cyst morphotypes, which continues from work completed in the first Atlas. Any available biogeographical and ecological information is also provided. We believe this Atlas will be useful to paleoecologists who wish to include stomatocysts in their studies. We also expect this book will be used by researchers working with living chrysophytes, and those interested in the morphology and ultrastructure of cyst morphotypes. Hopefully these descriptions will further accelerate the continued effort to link cyst morphotypes to the algae that produce them.

John P. Smol is a professor in the Biology Department at Queen's University (Canada), with a cross-appointment at the School of Environmental Studies. He co-directs the Paleoecological Environmental Assessment and Research Lab (PEARL). Professor Smol is co-editor of the Journal of Paleolimnology and holds the Canada Research Chair in Environmental Change.

Acknowledgements. 1. Introduction. 2. Methods. 3. Terminology. 4. Cyst Descriptions. 5. Additional Morphotypes Described Using LM Only. 6. Count Sheet. References. Stomatocyst Index. Species Index.