| Stenostomum unicolor Schmidt, 1848 | 1913 or earlier | | | damp ground, pools, springs in Europe (England, France, Switzerland), in lakes in the upper layers (Denmark, Germany, Helgoland, Austria, Hungary, Russia). |
| Microstomum canum Fuhrmann, 1894 | 1913 or earlier | | | |
| Macrostomum viride (1) Beneden E, 1870 | 1913 or earlier | | | found in the country of France. |
| Macrostomum tuba Graff, 1882 | 1913 or earlier | | | |
| Prorhynchus sphyrocephalus (de Man, 1876) | 1913 or earlier | | | |
| Dalyellia graffii (Hallez, 1878) | 1913 or earlier | | | in Lemna and Konferven. In northern France. |
| Dalyellia hallezii Graff, 1882 | 1913 or earlier | | | pools. |
| Dalyellia viridis (Shaw, 1791) | 1913 or earlier | | | |
| Castrella (Castrella) truncata (Abildgaard, 1789) | 1913 or earlier | | | ubiquitous, very active, prefers swimming at the surface of cold and warm, standing and flowing water. |
| Phaenocora unipunctata (Ørsted, 1843) | 1913 or earlier | | | |
| Olisthanella truncula (Schmidt, 1858) | 1913 or earlier | | | |
| Olisthanella obtusa (Schultze, 1851) | 1913 or earlier | | | northern France. |
| Olisthanella splendida (Graff, 1882) | 1913 or earlier | | | puddles and lakes. Probably pelagic. |
| Olisthanella halleziana (Vejdovsky, 1880) | 1913 or earlier | | mud | In springs of pools and lakes, associated with Crustacean food ?, Tubificiden and Lumbriciden tubes ?. |
| Strongylostoma radiatum (Müller, 1774) | 1913 or earlier | | | ponds and lakes. Northern France. |
| Rhynchomesostoma rostratum (Müller, 1774) | 1913 or earlier | | | |
| Typhloplana viridata (Abildgaard, 1789) | 1913 or earlier | | | moors and lakes. |
| Mesostoma productum (Schmidt, 1848) | 1913 or earlier | | | puddles and lakes of Europe. |
| Mesostoma lingua (Abildgaard, 1789) | 1913 or earlier | | | mud and detritus, of pools, ponds and lakes. |
| Mesostoma ehrenbergii (Focke, 1836) | 1913 or earlier | | | |
| Mesostoma tetragonum (Müller, 1774) | 1913 or earlier | | | |
| Bothromesostoma personatum (Schmidt, 1848) | 1913 or earlier | | | |
| Miodendrocoelum parisi de Beauchamp, 1929 | 1929 or earlier | | | |
| Acrochordonoposthia conica Reisinger, 1924 | 1954 or earlier | | | Frankreich. |
| Typhloplanella halleziana (Vejdovsky, 1880) | 1890 or earlier | | | Frankreich. |
| Myostenostomum tauricum (Nasonov, 1924) | 1947 or earlier | | | Frankreich. |
| Rhynchoscolex simplex Leidy, 1852 | 1907 or earlier | | | Böhmen. |
| Prorhynchus stagnalis Schultze, 1851 | 1947 or earlier | | | Frankreich. |
| Geocentrophora sphyrocephala de Man, 1876 | 1890 or earlier | | | |
| Dendrocoelum collini (de Beauchamp, 1919) | 1919 or earlier | | | |
| Bipalium kewense Moseley, 1878 | 2021 or earlier | | | |
| Caenoplana coerulea Moseley, 1877 | 2021 or earlier | | | |
| Caenoplana decolorata Mateos, Jones, Riutort & Álvarez-Presas , 2020 | 2020 or earlier | | | |
| Caenoplana variegata (Fletcher & Hamilton, 1888) | 2020 or earlier | | | |
| Platydemus manokwari Beauchamp, 1962 | | | | |