| Plagiostomidae | Akamptostoma | Riedl, 1959 | |
| Westbladiella | angulifera | Riedl, 1954 | |
| Culleopharynx | armatus | (Riedl, 1956) | |
| Trisaccopharynx | armatus | Riedl, 1956 | |
| Ceratopera | axi | (Riedl, 1954) | |
| Proxenetes | axi | Riedl, 1954 | |
| Plagiostomum | cavernae | (Riedl, 1959) | |
| Plicastoma | cavernae | Riedl, 1959 | |
| Westbladiella | falcifera | Riedl, 1954 | |
| Plicastoma | glaucum | Riedl, 1959 | |
| Plagiostomum | glaucum | (Riedl, 1959) | |
| Cylindrostoma | laetum | Riedl, 1959 | |
| Childia | leptoposthium | (Riedl, 1956) | |
| Paraphanostoma | leptoposthium | Riedl, 1956 | |
| Gastropharynx | limophilus | Riedl, 1956 | |
| Marinellia | lingulifera | Riedl, 1954 | |
| Protoplanellinae | Lioniella | Riedl, 1954 | |
| Cylindrostoma | luridum | Riedl, 1954 | |
| Typhloplaninae | Marinellia | Riedl, 1954 | |
| Haloplanella | multifida | Riedl, 1954 | |
| Myostomellidae | Myostomella | Riedl, 1954 | |
| Acoela | Myostomellidae | Riedl, 1954 | |
| Monocelis | nitida | Riedl, 1959 | |
| Prorogonophora | perspicua | Riedl, 1954 | |
| Lioniella | petiti | Riedl, 1954 | |
| Plagiostomum | productum | Riedl, 1959 | |
| Plicastoma | productum | (Riedl, 1959) | |
| Protomonotresinae | Propozonopora | Riedl, 1954 | |
| Protomonotresinae | Prorogonophora | Riedl, 1954 | |
| Myostomella | pulchella | Riedl, 1954 | |
| Convoluta | punctata | Riedl, 1959 | |
| Haloplanella | pusilla | Riedl, 1959 | |
| Trigonostomum | quadrifolium | Riedl, 1954 | |
| Ceratopera | reisingeri | (Riedl, 1959) | |
| Proxenetes | reisingeri | Riedl, 1959 | |
| Vorticeros | rudis | Riedl, 1959 | |
| Plagiostomum | rudis | (Riedl, 1959) | |
| Tyrrheniella | sigillata | Riedl, 1959 | |
| Praeaphanostoma | sizilianum | (Riedl, 1954) | |
| Mecynostomum | sizilianum | Riedl, 1954 | |
| Plagiostomum | sorrentinum | Riedl, 1954 | |
| Plagiostomum | spadix | Riedl, 1959 | |
| Plicastoma | spadix | (Riedl, 1959) | |
| Akamptostoma | spongiphilum | Riedl, 1959 | |
| Plagiostomum | spongiphilum | (Riedl, 1959) | |
| Plicastoma | spongiphilum | (Riedl, 1959) | |
| Ceratopera | steinboecki | (Riedl, 1959) | |
| Proxenetes | steinboecki | Riedl, 1959 | |
| Westbladiella | tubifera | Riedl, 1956 | |
| Tyrrheniellidae | Tyrrheniella | Riedl, 1959 | |
| Catenulida | Tyrrheniellidae | Riedl, 1959 | |
| Proporus | venenosus | viridiflavus | Riedl, 1959 |
| Plagiostomum | xenophilum | Riedl, 1959 | |
| Plicastoma | xenophthalmum | Riedl, 1959 | |
| Plagiostomum | xenophthalmum | (Riedl, 1959) | |
| Amphiscolops | zeii | Riedl, 1956 |
56 names, including those in new combination. (Max listing set to 900)