| Plehniidae | Acelis (part) | Plehn, 1896 | |
| Stylochoplaninae | Alloioplana | Plehn, 1896 | |
| Stylochoplanidae | Alloioplana | Plehn, 1896 | |
| Pseudocerotidae | Amblyceraeus | Plehn, 1897 | |
| Pseudocerotidae | Amblyceraeus | Plehn, 1898 | |
| Plehnia | arctica | (Plehn, 1896) | |
| Plehnia | arctica | (Plehn, 1896) | |
| Acelis (part) | arctica | Plehn, 1896 | |
| Notoplana | atlantica | (Plehn, 1896) | |
| Latocestus | atlanticus | Plehn, 1896 | |
| Latocestus | atlanticus | Plehn, 1896 | |
| Polyporus | caecus | Plehn, 1897 | |
| Polyporus | caecus | Plehn, 1897 | |
| Pleioplana | californica | (Plehn, 1898) | |
| Leptoplana | californica | Plehn, 1897 | |
| Leptoplana | californica | Plehn, 1898 | |
| Leptoplana | cherchiae | Plehn, 1896 | |
| Notoplana | chierchiae | (Plehn, 1896) | |
| Notocomplana | chierchiae | (Plehn, 1896) | |
| Leptoplana | chierchiae | Plehn, 1896 | |
| Notoplana | chierchiae | (Plehn, 1896) | |
| Alloioplana | delicata | Plehn, 1896 | |
| Alloioplana | delicata | Plehn, 1896 | |
| Diplopharyngeatidae | Diplopharyngeata | Plehn, 1896 | |
| Euplanidae | Diplopharyngeata | Plehn, 1896 | |
| Cestoplanoidea | Diplopharyngeatidae | Plehn, 1896 | |
| Diplopharyngeata | filiformis | Plehn, 1896 | |
| Diplopharyngeata | filiformis | Plehn, 1896 | |
| Thysanoplana | indica | Plehn, 1896 | |
| Acanthozoon | indicum | (Plehn, 1896) | |
| Thysanozoon | indicum | (Plehn, 1896) | |
| Thysanoplana (1) | indicum | Plehn, 1896 | |
| Notoplana | kuekenthali | Plehn, 1896 | |
| Notoplana | kuekenthali | (Plehn, 1896) | |
| Leptoplana | kuekenthalli | Plehn, 1896 | |
| Leptoplana | kükenthali | Plehn, 1896 | |
| Latocestinae | Latocestus | Plehn, 1896 | |
| Latocestidae | Latocestus | Plehn, 1896 | |
| Amblyceraeus | luteus | Plehn, 1897 | |
| Pseudoceros | luteus | (Plehn, 1898) | |
| Amblyceraeus | luteus | Plehn, 1897 | |
| Pseudoceros | luteus | (Plehn, 1898) | |
| Semonia | maculata | Plehn, 1896 | |
| Semonia | maculata | Plehn, 1896 | |
| Semonia | maculata | Plehn, 1896 | |
| Thysanoplana | marginata | Plehn, 1896 | |
| Thysanoplana (1) | marginata | Plehn, 1896 | |
| Acanthozoon | marginatum | (Plehn, 1896) | |
| Pseudoceros | marmoratus | Plehn, 1898 | |
| Pseudoceros | marmoratus | Plehn, 1898 | |
| Cryptoceros | marmoratus | (Plehn, 1898) | |
| Stylochoplanidae | Microcelis | Plehn, 1899 | |
| Cryptocelidinae | Microcelis | Plehn, 1899 | |
| Cryptocelidinae | Microcelis | Plehn, 1899 | |
| Prosthiostomum | nationale | Plehn, 1896 | |
| Notoplana | nationalis | (Plehn, 1896) | |
| Aceros | nationalis | Plehn, 1896 | |
| Acerotisa | nationalis | (Plehn, 1896) | |
| Aceros | nationalis | Plehn, 1896 | |
| Leptoplana | nationalis | Plehn, 1896 | |
| Notoplehnia | nationalis | (Plehn, 1896) | |
| Acerotisa | nationalis | (Plehn, 1896) | |
| Notoplana | nationalis | (Plehn, 1896) | |
| Stylochoplana | nationalis | Plehn, 1896 | |
| Leptoplana | nationalis | Plehn, 1896 | |
| Stylochoplana | nationalis | Plehn, 1896 | |
| Prosthiostomum | nationalis | Plehn, 1896 | |
| Euplana | pacificola | (Plehn, 1896) | |
| Leptoplana | pacificola | Plehn, 1896 | |
| Discoplana | pacificola | (Plehn, 1896) | |
| Euplana | pacificola | (Plehn, 1896) | |
| Discoplana | pacificola | (Plehn, 1896) | |
| Euplanoida | pacificola | (Plehn, 1896) | |
| Leptoplana | pacificola | Plehn, 1896 | |
| Stylochoplana | panamensis | (Plehn, 1896) | |
| Armatoplana | panamensis | (Plehn, 1896) | |
| Stylochoplana | panamensis | (Plehn, 1896) | |
| Leptoplana | panamensis | Plehn, 1896 | |
| Leptoplana | panamensis | Plehn, 1896 | |
| Notoplanidae | Plagiotata | Plehn, 1896 | |
| Stylochoplaninae | Plagiotata | Plehn, 1896 | |
| incertae sedis | Polyporus | Plehn, 1897 | |
| incertae sedis | Polyporus | Plehn, 1897 | |
| Plagiotata | promiscua | Plehn, 1896 | |
| Plagiotata | promiscua | Plehn, 1896 | |
| Stylochoplana | schauinslandi | (Plehn, 1899) | |
| Microcelis | schauinslandi | (Plehn, 1899) | |
| Microcelis | schauinslandi | Plehn, 1899 | |
| Microcelis | schauinslandi | Plehn, 1899 | |
| Euplanidae | Semonia | Plehn, 1896 | |
| Taenioplaninae | Semonia | Plehn, 1896 | |
| Taenioplaninae | Semonia | Plehn, 1896 | |
| Prostheceraeus | species | Plehn, 1896 | |
| Discocelis | species | Plehn, 1896 | |
| Prosthiostomum | species (1) | Plehn, 1896 | |
| Prosthiostomum | species (2) | Plehn, 1896 | |
| Discoplana | subviridis | (Plehn, 1896) | |
| Discoplana | subviridis | Plehn, 1896 | |
| Susakia | subviridis | (Plehn, 1896) | |
| Leptoplana | subviridis | Plehn, 1896 | |
| Leptoplana | subviridis | Plehn, 1896 | |
| Euplana | subviridus | (Plehn, 1896) | |
| Pseudocerotidae | Thysanoplana | Plehn, 1896 | |
| Pseudocerotidae | Thysanoplana (1) | Plehn, 1896 | |
| Discoplana | viridis | (Plehn, 1896) |
105 names, including those in new combination. (Max listing set to 900)