Kingdom Animalia Linnaeus, 1758 - animals Phylum Annelida Lamarck, 1809 - segmented worms Class Hirudinida Subclass Hirudinea see Subclass Euhirudinea Lukin, 1956 Genus Glossiphonia Johnson, 1817 Genus Hirudo Linnaeus, 1758 Genus Ozobranchus Quatrefages, 1852 Genus Pontobdella Leach, 1815