1. Species Planaria flaccida sensu Johnston, 1828
2. Species Planaria algae Dalyell, 1853 accepted as Tetrastemma algae (Dalyell, 1853) accepted as Tetrastemma candidum (Müller, 1774) (synonym)
3. Species Planaria angulata (Müller, 1774) accepted as Fasciola angulata Müller, 1774 accepted as Amphiporus angulatus (Müller, 1774) (synonym)
4. Species Planaria ascaridea Montagu, 1808 accepted as Tetrastemma melanocephalum (Johnston, 1837) (synonym)
5. Species Planaria badia Rathke, 1799 accepted as Nemertes badia (Rathke, 1799) accepted as Drepanophorus spectabilis (Quatrefages, 1846) (Uncertain synonym)
6. Species Planaria carnea Rathke, 1799 accepted as Meckelia carnea Diesing, 1850 accepted as Polystemma carneum Müller, 1774 accepted as Lineus ruber (Müller, 1774) (synonym)
7. Species Planaria dorsalis Abildgaard, 1806 accepted as Oerstedia dorsalis (Abildgaard, 1806) (basionym)
8. Species Planaria filaris Müller, 1780 accepted as Micrura filaris (Müller, 1780) (synonym)
9. Species Planaria filiformis Johnston, 1828 accepted as Procephalothrix filiformis (Johnston, 1828) accepted as Cephalothrix filiformis (Johnston, 1828) (basionym)
10. Species Planaria flava Montagu, 1808 accepted as Prosorhochmus claparedii Keferstein, 1862 (synonym)
11. Species Planaria fusca Fabricius, 1780 accepted as Meckelia fusca (Fabricius, 1780) accepted as Nemertes fusca (Fabricius, 1780) accepted as Lineus ruber (Müller, 1774) (synonym)
12. Species Planaria fuscescens Fabricius, 1798 accepted as Cerebratulus fuscescens accepted as Lineus ruber (Müller, 1774) (synonym, also Nemertes fuscescens)
13. Species Planaria lactiflorea Johnston, 1828 accepted as Amphiporus lactifloreus (Johnston, 1828) (synonym)
14. Species Planaria linearis Rathke, 1799 accepted as Cephalothrix linearis (Rathke, 1799) (basionym)
15. Species Planaria lineata Montagu, 1808 accepted as Micrura fasciolata Ehrenberg, 1828
16. Species Planaria quadrioculata Johnston, 1828 accepted as Tetrastemma candidum (Müller, 1774) (synonym)

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