Info:   This monographic treating of one of the most colourful and variable genus of endemic Australian volutes deals with all 29 species and subspecies as well as many named forms. Several taxa are first times described as new to science. The textpart gives an introduction to the genus and after that every species, sub–species and form is described in detail. Synonymy, information on types and type localities, informations on distribution, biology, habitat, size–range and variation are added, as well as a dignosishow to distinguish from similar taxa. The main part are 93 colour–plates that figure every variation and form collectable of all species, give a determination tool and show living animals and their natural habitats.