| Dalyellia pallida Hofsten N, 1907 | 1907 or earlier |  |  |  | 
| Castrella (Castrella) truncata (Abildgaard, 1789) | 1918 or earlier |  |  |  | 
| Rhynchomesostoma rostratum (Müller, 1774) | 1913 or earlier |  |  |  | 
| Tetracelis marmorosa (Müller, 1773) | 1913 or earlier |  |  | standing puddles and lakes. | 
| Castrada (Castrada) perspicua (Fuhrmann, 1894) | 1913 or earlier |  |  | pools and lakes. | 
| Castrada (Castrada) stagnorum Luther, 1904 | 1911 or earlier |  |  | puddles and slow moving, humus rich water in south Finnland. | 
| Castrada (Castrada) lanceola (Braun, 1885) | 1913 or earlier |  |  |  | 
| Castrada (Castrada) hofmanni Braun, 1885 | 1913 or earlier |  |  |  | 
| Castrada (Castrada) sphagnetorum Luther, 1904 | 1913 or earlier |  |  | in Sphagnum of marsh, moor waters of south Finland. | 
| Castrada (Castrada) viridis Volz, 1898 | 1913 or earlier |  |  |  | 
| Castrada (Castrada) armata (Fuhrmann, 1894) | 1913 or earlier |  |  | mud of pools and lakes, and littoral zone. | 
| Castrada (Castrada) neocomensis Volz, 1898 | 1913 or earlier |  |  |  | 
| Mesostoma productum (Schmidt, 1848) | 1918 or earlier |  |  |  | 
| Mesostoma ehrenbergii (Focke, 1836) | 1918 or earlier |  |  |  | 
| Mesostoma craci Schmidt, 1858 | 1917 or earlier |  |  |  | 
| Mesostoma punctatum Braun, 1885 | 1918 or earlier |  |  |  | 
| Bothromesostoma essenii Braun, 1885 | 1913 or earlier |  |  |  | 
| Plagiostomum lemani Forel & Du Plessis, 1874 | 1917 or earlier |  |  |  | 
| Dalyellia ornata Hofsten N, 1907 | 1932 or earlier |  |  | south Finnland. | 
| Bipalium kewense Moseley, 1878 | 2021 or earlier |  |  |  |