Abranchus Johansson, 1896 accepted as Oceanobdella Caballero, 1956 (source of synonymy)
Aestabdella Burreson, 1976 accepted as Pterobdella Kaburaki, 1921 (additional source)
Arctobdella branchiarum de Silva & Kabata, 1961 accepted as Hemibdella branchiarum (de Silva & Kabata, 1961) (status source)
Arhynchobdellida (additional source)
Austrobdella Badham, 1916 (basis of record)
Austrobdella anoculata (Moore, 1940) (status source)
Austrobdella bilobata (Ingram, 1957) (additional source)
Austrobdella californica (Burreson, 1977) (additional source)
Bathybdella Burreson, 1981 (basis of record)
Beringobdella Caballero, 1974 (additional source)
Beringobdella rectangulata (Levinsen, 1881) (additional source)
Carcinobdella Oka, 1910 accepted as Notostomum Levinsen, 1882 (additional source)
Caspiobdella fadejewi (Epshtein, 1961) (status source)
Crangonobdella achmerovi (Borovitzkaia, 1949) accepted as Platybdella fabricii Malm, 1863 (additional source)
Crangonobdella murmanica Selensky, 1914 accepted as Platybdella fabricii Malm, 1863 (additional source)
Euhirudinea (basis of record)
Glyptonotobdella Sawyer & White, 1969 (additional source)
Glyptonotobdella antarctica (Sawyer & White, 1969) (additional source)
Hemibdella van Beneden & Hesse, 1863. Revised (additional source)
Hemibdella branchiarum (de Silva & Kabata, 1961) (new combination reference)
Hemibdella soleae (van Beneden & Hesse, 1863) (additional source)
Heptacyclus virgatus (Oka, 1910) (additional source)
Hirudinea (additional source)
Hirudiniformes (basis of record)
Hirudo Linnaeus, 1758 (basis of record)
Ichthyobdella Blainville, 1827 (additional source)
Limnotrachelobdella okae (Moore, 1924) (basis of record)
Makarabdella Richardson, 1959 (basis of record)
Makarabdella manteri Richardson, 1959 accepted as Bdellamaris manteri (Richardson, 1959) (additional source)
Malmiana Strand, 1942 accepted as Heptacyclus Vasileyev, 1939 (additional source)
Malmiana nuda (Richardson, 1970) accepted as Malmiana brunnea (Johansson, 1896) accepted as Heptacyclus brunneus (Johansson, 1896) (source of synonymy)
Malmiana philotherma (Sawayer, Lawler & Overstreet, 1975) accepted as Janusion philotherma (Sawayer, Lawler & Overstreet, 1975) (additional source)
Malmiana virida (Burreson, 1977) accepted as Janusion virida (Burreson, 1977) (additional source)
Marsipobdella Moore, 1952 (basis of record)
Marsipobdella sacculata (Moore, 1952) (basis of record)
Mooreobdellina Epshtein, 1972 (basis of record)
Mysidobdella Selensky, 1927 (additional source)
Mysidobdella borealis (Johansson, 1898) (basis of record)
Mysidobdella oculata Selensky, 1927 accepted as Mysidobdella borealis (Johansson, 1898) (basis of record)
Notobdella Benham, 1909 (additional source)
Notobdella nototheniae Benham, 1909 (additional source)
Notostomobdella Moore & Meyer, 1951 accepted as Notostomum Levinsen, 1882 (additional source)
Notostomobdella cyclostoma (Johansson, 1898) accepted as Notostomum cyclostomum (Johansson, 1898) (additional source)
Notostomum laeve Levinsen, 1882 (additional source)
Oceanobdella Caballero, 1956 (additional source)
Oceanobdella blennii (Knight-Jones, 1940) (additional source)
Oceanobdella microstoma (Johansson, 1896) (additional source)
Oceanobdella pallida Burreson, 1977 (additional source)
Oceanobdella sexoculata (Malm, 1863) (basis of record)
Ostreobdella papillata Burreson, 1977 (additional source)
Ottoniobdella Moore & Meyer, 1951 accepted as Malmiana Strand, 1942 accepted as Heptacyclus Vasileyev, 1939 (source of synonymy)
Oxytonostoma typica Malm, 1863 (basis of record)
Ozobranchus Quatrefages, 1852 (additional source)
Piscicola Blainville, 1818 (additional source)
Piscicolidae Johnston, 1865 (basis of record)
Platybdella Malm, 1863 (basis of record)
Platybdella buccalis (Nigrelli, 1946) accepted as Oceanobdella sexoculata (Malm, 1863) (source of synonymy)
Platybdella pinnarum (de Silva & Burdon-Jones, 1961) (new combination reference)
Pontobdella muricata (Linnaeus, 1758) (additional source)
Pterobdella Kaburaki, 1921 (additional source)
Rhynchobdellida (basis of record)
Sanguinothus de Silva & Burdon-Jones, 1961 accepted as Crangonobdella Selensky, 1914 (additional source)
Sanguinothus pinnarum de Silva & Burdon-Jones, 1961 accepted as Platybdella pinnarum (de Silva & Burdon-Jones, 1961) (status source)
Trulliobdella Brinkman, 1947 (basis of record)

German Egel for Hirudinea