| Allostoma evelinae (Marcus, 1948) | | w | latest taxonomic authority | |
| Cylindrostoma laetum Riedl, 1959 | | w | latest taxonomic authority | |
| Pseudostomidae Euxinia Graff, 1911 | [with synonyms] | w | other taxonomic work | |
| Pseudostomum caecum (2) (Graff, 1882) | | w | latest taxonomic authority | |
| Pseudostomum klostermanni (Graff, 1874) | [with synonyms] | w | latest taxonomic authority | |
| Allostoma amoenum Karling, 1962 | | w | primary taxonomic authority (describer) | 198-207, figs. 10, 11, 27-44 |
| Cylindrostoma triangulum Karling, 1962 | | w | primary taxonomic authority (describer) | 193-198, figs. 9, 20-26 |
| Pseudostomum californicum Karling, 1962 | | w | primary taxonomic authority (describer) | 181-187, figs. 1-4, 6, 7 |
| Prolecithophora Pseudostomidae Graff, 1904-08 | [with synonyms] | w | other taxonomic work | |
| Pseudostomidae Pseudostomum Schmidt, 1848 | [with synonyms] | w | other taxonomic work | 181-187 |
| Cylindrostoma monotrochum (Graff, 1882) | [with synonyms] | w | other taxonomic work | 187-193, figs. 5, 8, 12-19 |
| Pseudostomidae Cylindrostoma Ørsted, 1845 | [with synonyms] | w | other taxonomic work | 187-198 |
| Prolecithophora Cylindrostomidae Reisinger, 1924 | | w | other taxonomic work | |