| Stenostomidae Stenostomum Schmidt, 1848 | [with synonyms] | w | primary taxonomic authority (describer) | |
| Stenostomum unicolor Schmidt, 1848 | [with synonyms] | w | primary taxonomic authority (describer) | 60 |
| Pseudostomidae Pseudostomum Schmidt, 1848 | [with synonyms] | w | primary taxonomic authority (describer) | |
| Pseudostomum faeroense Schmidt, 1848 | | w | primary taxonomic authority (describer) | |
| Dalyellia picta (Schmidt, 1848) | | w | primary taxonomic authority (describer) | 29 |
| Dalyelliidae Hypostomum Schmidt, 1848 | | w | primary taxonomic authority (describer) | 30 |
| Hypostomum viride Shaw, 1791 | | w | other taxonomic work | 30-35, Taf. I. 4, 4a, Taf. II, 4 b |
| Microdalyellia picta (Schmidt, 1848) | [with synonyms] | w | primary taxonomic authority (describer) | |
| Bothromesostoma personatum (Schmidt, 1848) | | w | primary taxonomic authority (describer) | 51, t. 4, f. 10 |
| Mesostoma personatum Schmidt, 1848 | [with synonyms] | w | primary taxonomic authority (describer) | |
| Mesostoma productum (Schmidt, 1848) | [with synonyms] | w | primary taxonomic authority (describer) | 54-56, 59, t. 6, f. 16, 16a, |
| Mesostoma pusillum Schmidt, 1848 | [with synonyms] | w | primary taxonomic authority (describer) | |
| Mesostoma sulphureum (Schmidt, 1848) | | w | primary taxonomic authority (describer) | |
| Mesostoma tetragonum (part)(2) Schmidt, 1848 | | w | primary taxonomic authority (describer) | |
| Mesostominae Schizostomum Schmidt, 1848 | | w | primary taxonomic authority (describer) | |
| Schizostomum productum Schmidt, 1848 | | w | primary taxonomic authority (describer) | |
| Opistominae Opistomum Schmidt, 1848 | | w | primary taxonomic authority (describer) | |
| Opistomum pallidum Schmidt, 1848 | [with synonyms] | w | primary taxonomic authority (describer) | 38, t.5, f. 14, 14b |
| Typhloplana pallida Schmidt, 1848 | | w | primary taxonomic authority (describer) | |
| Typhloplana sulphurea Schmidt, 1848 | | w | primary taxonomic authority (describer) | |
| Macrostomidae Macrostomum Schmidt, 1848 | [with synonyms] | w | primary taxonomic authority (describer) | |
| Microstomidae Microstomum Schmidt, 1848 | [with synonyms] | w | primary taxonomic authority (describer) | |
| Vortex pictus Schmidt, 1848 | | w | primary taxonomic authority (describer) | 29, Taf. I. 3 |
| Microstomum lineare (Müller, 1773) | [with synonyms] | w | other taxonomic work | 56 |
| Mesostoma ehrenbergii (Focke, 1836) | [with synonyms] | w | other taxonomic work | 47, t. 4, f. 9 |
| Mesostoma tetragonum (Müller, 1774) | [with synonyms] | w | other taxonomic work | 44, t. 3, f. 8, 8c |
| Mesostoma lingua (Abildgaard, 1789) | [with synonyms] | w | other taxonomic work | 40, t. 2 f.6, 6c |
