| Polycystidinae Pseudopolycystis Meixner, 1938 | | w | latest taxonomic authority | |
| Pseudopolycystis inermis Meixner, 1929 | | w | other taxonomic work | |
| Vortex adriatica Dörler, 1900 | | w | latest taxonomic authority | |
| Pogaina natans (Ax, 1951) | [with synonyms] | w | primary taxonomic authority (describer) | |
| Provortex karlingi Ax, 1951 | | w | primary taxonomic authority (describer) | 279, 314-316, fig. 21 |
| Vejdovskya ignava Ax, 1951 | | w | primary taxonomic authority (describer) | 312-314, 346, 347, 366, 369, 370, 373 |
| Vejdovskya natans Ax, 1951 | | w | primary taxonomic authority (describer) | 309-311 |
| Cicerininae Ptyalorhynchus Ax, 1951 | | w | primary taxonomic authority (describer) | 330-331 |
| Ptyalorhynchus coecus Ax, 1951 | | w | primary taxonomic authority (describer) | 330-331 |
| Prognathorhynchus anophthalmus Meixner | | w | primary taxonomic authority (describer) | see note for this taxon |
| Schizorhynchoides rarus Ax, 1951 | [with synonyms] | w | primary taxonomic authority (describer) | |
| Coronhelmis lutheri Ax, 1951 | | w | primary taxonomic authority (describer) | 279, 318-320, 366, 367, 373, fig. 23 |
| Promesostoma gracilis Ax, 1951 | | w | primary taxonomic authority (describer) | |
| Promesostoma meixneri Ax, 1951 | | w | primary taxonomic authority (describer) | |
| Promesostoma rostratum Ax, 1951 | | w | primary taxonomic authority (describer) | |
| Proxenetes angustus Ax, 1951 | | w | primary taxonomic authority (describer) | 321-322, f. 24 |
| Macrostomum pusillum Ax, 1951 | [with synonyms] | w | primary taxonomic authority (describer) | |
| Macrostomum rubrocinctum Ax, 1951 | [with synonyms] | w | primary taxonomic authority (describer) | |
| Archiloinae Monocelopsis Ax, 1951 | | w | primary taxonomic authority (describer) | |
| Monocelopsis otoplanoides Ax, 1951 | [with synonyms] | w | primary taxonomic authority (describer) | |
| Itaspiella armata (Ax, 1951) | | w | primary taxonomic authority (describer) | |
| Notocaryoplanella glandulosa (Ax, 1951) | | w | primary taxonomic authority (describer) | |
| Kataplana germanica (Meixner in Ax, 1951) | [with synonyms] | w | primary taxonomic authority (describer) | |
| Pseudosyrtis subterranea (Ax, 1951) | [with synonyms] | w | primary taxonomic authority (describer) | 288, 294-295, 297, 366, 367, figs. 7 a-d, 9 b |
| Promesostoma gracile Ax, 1951 | [with synonyms] | w | primary taxonomic authority (describer) | |
| Promonotus schultzei Meixner, 1943 | [with synonyms] | w | other taxonomic work | |
| Thylacorhynchus sp. Ax, 1951 | | - | primary taxonomic authority (describer) | |
| Pseudograffilla arenicola Meixner, 1938 | | w | other research on this sp. | 345 |
| Vejdovskya pellucida (Schultze, 1851) | [with synonyms] | w | other taxonomic work | 311-312, f. 18 |
| Brinkmanniella macrostomoides Luther, 1948 | | w | other taxonomic work | 279, 347, 350, 352, 354, 355, 358 |
| Tvaerminnea karlingi Luther, 1943 | | w | other taxonomic work | 279, 368, 369, 373 |
| Coronhelmis multispinosus Luther, 1948 | | w | other research on this sp. | 346, 347, 357, 368, 369, 373 |
| Proxenetes karlingi Luther, 1943 | [with synonyms] | w | other research on this sp. | 279, 320, 345, 348, 350, 358 |
| Beklemischeviella contorta (Beklemischev, 1927) | [with synonyms] | w | other research on this sp. | viele Stellen |
| Promesostoma marmoratum (Schultze, 1851) | [with synonyms] | w | other research on this sp. | many places |
| Promesostoma cochleare Karling, 1935 | | w | other taxonomic work | 323, 328-329, 340-343, 358 |
| Haloplanella minuta Luther, 1946 | | w | other taxonomic work | |
| Thalassoplanella collaris Luther, 1946 | | w | other taxonomic work | |
| Macrostomum hystricinum Beklemischev, 1951 | [with synonyms] | w | other taxonomic work | |
| Macrostomum hamatum Luther, 1947 | | w | other taxonomic work | |
| Carcharodorhynchus subterraneus Meixner, 1938 | [with synonyms] | w | other taxonomic work | |
| Omalostomum dubium de Beauchamp, 1927 | | w | other taxonomic work | |
| Paromalostomum dubium (de Beauchamp, 1927) | [with synonyms] | w | other taxonomic work | |
| Gnathorhynchus conocaudatus Meixner, 1929 | | w | other research on this sp. | 280, 353-356, 358 |
| Polycystis robusta (Karling, 1931) | | w | other taxonomic work | |
| Promesostoma bilineatum Pereyaslawzewa, 1892 | | w | other taxonomic work | |
| Archimacrostomum pusillum (Ax, 1951) | | w | primary taxonomic authority (describer) | |
