| Mesostominae Schizostomum Schmidt, 1848 | | w | latest taxonomic authority | |
| Mesostoma cyathus Schmidt, 1858 | | w | primary taxonomic authority (describer) | |
| Mesostomum fallax Schmidt, 1858 | | w | primary taxonomic authority (describer) | |
| Mesostoma truncula Schmidt, 1858 | | w | primary taxonomic authority (describer) | |
| Mesostoma wandae (1) Schmidt, 1858 | | w | primary taxonomic authority (describer) | |
| Typhloplana hirudo (Schmidt, 1858) | | w | primary taxonomic authority (describer) | |
| Typhloplana lapponicum (Schmidt, 1858) | | w | primary taxonomic authority (describer) | |
| Typhloplanella hirudo (Schmidt, 1858) | | w | primary taxonomic authority (describer) | |
| Derostoma galizianum Schmidt, 1858 | | w | primary taxonomic authority (describer) | 26 |
| Prostomum furiosum Schmidt, 1858 | | w | primary taxonomic authority (describer) | |
| Turbella galiciana (Schmidt, 1858) | | w | primary taxonomic authority (describer) | |
| Turbella scoparia (Schmidt, 1858) | | w | primary taxonomic authority (describer) | |
| Vortex coronarius Schmidt, 1858 | | w | primary taxonomic authority (describer) | |
