Otocelis maris-alba (Sabussow, 1899) | 1900 or earlier | | | |
Urastoma fausseki Dörler, 1900 | pre 1900 | | in mantle cavity of Mytilus edulis L. | collected by Boehmig, sent by W. Faussek |
Provortex balticus (Schultze, 1851) | 1913 or earlier | | | |
Provortex affinis (Jensen, 1878) | 1913 or earlier | littoral | | |
Vortex hispidus Claparede, 1863 | 1913 or earlier | | | |
Anoplodium chirodotae Sabussow, 1900 | 1900 or earlier | | | parasite in Chirodota laevis O. Fabr. (C. pellucida M. Sars |
Maehrenthalia agilis (Levinsen, 1879) | 1913 or earlier | | | |
Phonorhynchus helgolandicus (Metschnikow, 1865) | 1913 or earlier | | | |
Prostomum papillatum Mereschkowsky, 1878 | 1879 or earlier | | | |
Monocelis alba Levinsen, 1879 | 1913 or earlier | | | |
Mesostoma lingua (Abildgaard, 1789) | 1932 or earlier | | | small water basin. |
Provortex balticus (Schultze, 1851) | 1900 or earlier | | | |
Mesostoma lingua (Abildgaard, 1789) | 1900 or earlier | | | |
Bothromesostoma essenii Braun, 1885 | 1900 or earlier | | | |