| Subspecies No subspecies are recognized.
 
 
 Original
                          description
 Hirudo littoralis Stroem, 1768
 
 Procerodes littoralis
                          (Stroem, 1768)Planaria
                        ulvae Oersted, 1843Planaria
                        littoralis (Stroem, 1768)
 Fovia littoralis
                          (Stroem, 1768)
 
 
 Procerodes ulvae (Oersted,
                          1843)Procerodes
                        wheatlandi Girard, 1850Gunda ulvae (Oersted,
                          1843)
 Neoplana
                        ulvae (Oersted, 1843)
 
 Planaria cornuta Dalyell, 1853 (unclear synonym)
 Planaria frequens Leidy, 1855 (unclear synonym)
 Gunda graffi Boehmig, 1893
 
 
 Note: The taxon Procerodes solowetzkiana
                        Sabussow, 1900, described from the Russian White
                        Sea, cannot be identified on the basis of the
                        description and the whereabouts of the type
                        material are unknown. However, some authors
                        suggest that it may be identical with the
                        present species.
 
 
 
 
 
 
 
 
 
 
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