| Convoluta convoluta (Abildgaard, 1806) | prior to 1905 | littoral |  |  | 
| Convoluta schultzii Schmidt, 1852 | 1854 or earlier |  |  |  | 
| Polycystis naegelii Kölliker, 1845 | 1913 or earlier |  |  | living among plants in the litoral zone. | 
| Vorticeros auriculatum (Müller, 1784) | 1913 or earlier | 0-35m |  | littoral up to 35 m deep in Algen and Bryozoen.  With Ulven. | 
| Pseudostomum klostermanni (Graff, 1874) | 1913 or earlier |  |  |  | 
| Allostoma monotrochum Graff, 1882 | 1913 or earlier |  |  | also with Plagiostomum girardi. | 
| Monocelis longiceps (Duges, 1830) | 1913 or earlier |  |  |  | 
| Convoluta schultzii Schmidt, 1852 | 1933 or earlier |  |  |  | 
| Convoluta convoluta (Abildgaard, 1806) | 1933 or earlier |  |  |  | 
| Convoluta sordida Graff, 1882 | 1933 or earlier |  |  |  |