With this volume, the description of the species of the Turbininae is completed. As they contain only two common and easily identified species, the subfamily Prisogasterinae and the monotypic genus Anadema are included here. While the first volume covered the genera Turbo, Lunella and Modelia, this volume treats the other genera: Astraea, Astralium, Bellastraea, Bolma, Cookia, Guildfordia, Lithopoma, Megastraea, Pomaulax, Uvanilla and in the subfamily Prisogasterinae the sole genus Prisogaster. As Anadema is often synonymized with Bolma, it also is included here.
This book is not meant to be a revision of the Turbininae but a compilation of the knowledge available at this point, and the authors are aware of the fact that in the near future, some of the information given here may turn out to be incorrect. But since waiting for all the knowledge the future will bring would have meant never starting this book, the authors tried to accumulate all information available as of summer 2011.