| Axia gieysztori (Ferguson, 1939) | | w | latest taxonomic authority | 319-331, Figs. 45-59: T. 1, figs. 3-4 |
| Macrostomum korsakovi Nasonov, 1921 | | w | latest taxonomic authority | 305 |
| Promacrostomum gieysztori (Ferguson, 1939) | | w | latest taxonomic authority | 319-331, Figs. 45-59: T. 1, figs. 3-4 |
| Macrostomum appendiculatum (1) distinguenda Papi, 1951 | | w | primary taxonomic authority (describer) | 314-315, fig. 38 |
| Macrostomum distinguendum Papi, 1951 | [with synonyms] | w | primary taxonomic authority (describer) | 314-315, figs. 38 |
| Macrostomum orthostylum curvata Papi, 1951 | | w | primary taxonomic authority (describer) | 308-310, Figs. 23-27 |
| Macrostomum orthostylum recurva Papi, 1951 | | w | primary taxonomic authority (describer) | 308-310, Figs. 23-27 |
| Macrostomum retortum Papi, 1951 | | w | primary taxonomic authority (describer) | 297-301, Figs. 10-15 |
| Macrostomum rostratum Papi, 1951 | [with synonyms] | w | primary taxonomic authority (describer) | 311-313 |
| Macrostomum viride (4) Papi, 1951 | | w | primary taxonomic authority (describer) | 310-311, Fig. 29 |
| Macrostomum viride (1) rostrata Papi, 1951 | | w | primary taxonomic authority (describer) | 311-313, Figs. 30-36 |
| Macrostomum karlingi Papi, 1953 | | w | other taxonomic work | 307-308, fig. 21 |
| Macrostomum lutheri Beklemischev, 1927 | [with synonyms] | w | other taxonomic work | 290-296, Figs. 1-9, Plate 1 (Figs. 1-2) |
| Macrostomum tuba gigas Okugawa, 1930 | | w | other taxonomic work | 301-303, Figs. 16 |
| Macrostomum obtusum Vejdovsky, 1895 | | w | other taxonomic work | 304-307, Figs. 17-20 |
| Macrostomum orthostylum Braun, 1885 | | w | other taxonomic work | 308, Fig. 28 |
| Macrostomum viride (1) Beneden E, 1870 | | w | other taxonomic work | 310-311, Fig. 29 |
| Macrostomum appendiculatum Fabricius, 1826 | [with synonyms] | w | other taxonomic work | 313-314, Fig. 37 |
| Macrostomum sensitivum Silliman, 1884 | | w | other taxonomic work | 315-319, Figs. 38-44 |