Anisoporus cobraeformis Ozaki, 1928 (redescription)
Aponurus Looss, 1907 (additional source)
Aponurus rhinoplagusiae Yamaguti, 1934 (original description)
Aponurus vitellograndis Layman, 1930 accepted as Hysterolecitha vitellograndis (Layman, 1930) Skrjabin & Guschanskaja, 1954 (additional source)
Bianium hemistoma (Ozaki, 1928) Yamaguti, 1934 (new combination reference)
Bianium hemistoma (Ozaki, 1928) Yamaguti, 1934 (redescription)
Biovarium Yamaguti, 1934 (original description)
Biovarium cryptocotyle Yamaguti, 1934 (original description)
Bivesicula Yamaguti, 1934 (original description)
Bivesiculidae Yamaguti, 1934 (original description)
Cryptogonimidae Ward, 1917 (additional source)
Decemtestis Yamaguti, 1934 (original description)
Derogenes varicus (Müller, 1784) Looss, 1901 (redescription)
Didymocystis wedli Ariola, 1902 accepted as Didymosulcus wedli (Ariola, 1902) (redescription)
Didymozoon Taschenberg, 1879 (additional source)
Dinurus scombri Yamaguti, 1934 (original description)
Gyliauchen papillatus (Goto & Matsudaira, 1918) Goto, 1919 (redescription)
Helicometra epinepheli Yamaguti, 1934 (original description)
Helicometra hypodytis Yamaguti, 1934 accepted as Helicometra fasciata (Rudolphi, 1819) Odhner, 1902 (original description)
Hexangium sigani Goto & Ozaki, 1929 (redescription)
Hypohepaticola Yamaguti, 1934 (original description)
Hysterolecithoides Yamaguti, 1934 (original description)
Hysterolecithoides epinepheli Yamaguti, 1934 (original description)
Lecithocladium excisiforme Cohn, 1902 (redescription)
Lecithocladium excisum (Rudolphi, 1819) Lühe, 1901 (redescription)
Lecithocladium pagrosomi Yamaguti, 1934 (original description)
Nematobothrium van Beneden, 1858 (additional source)
Nematobothrium filiforme Yamaguti, 1934 (original description)
Opecoelus inimici Yamaguti, 1934 (original description)
Opecoelus lobatus Ozaki, 1925 (redescription)
Opecoelus sphaericus Ozaki, 1925 (redescription)
Opegaster syngnathi Yamaguti, 1934 (original description)
Paracryptogonimus Yamaguti, 1934 accepted as Siphoderina Manter, 1934 (original description)
Paradiscogaster Yamaguti, 1934 (original description)
Parahemiurus Vaz & Pereira, 1930 (additional source)
Parahemiurus sardiniae Yamaguti, 1934 accepted as Parahemiurus merus (Linton, 1910) Manter, 1940 (original description)
Parahemiurus seriolae Yamaguti, 1934 accepted as Parahemiurus merus (Linton, 1910) Manter, 1940 (original description)
Podocotyloides Yamaguti, 1934 (original description)
Proctoeces maculatus (Looss, 1901) Odhner, 1911 (redescription)
Prosorchiinae Yamaguti, 1934 (original description)
Prosorchis Yamaguti, 1934 (original description)
Pseudocreadium monacanthi Layman, 1930 (redescription)
Sterrhurus inimici Yamaguti, 1934 accepted as Lecithochirium inimici (Yamaguti, 1934) Bray, 1991 (original description)
Stomachicola Yamaguti, 1934 (original description)
Tergestia laticollis (Rudolphi, 1819) Stossich, 1899 (redescription)
Tetrochetus coryphaenae Yamaguti, 1934 (original description)
Tubulovesicula Yamaguti, 1934 (original description)
Tubulovesicula anguillae Yamaguti, 1934 accepted as Tubulovesicula angusticauda (Nicoll, 1915) Yamaguti, 1934 (original description)
Tubulovesicula angusticauda (Nicoll, 1915) Yamaguti, 1934 (new combination reference)
Tubulovesicula lindbergi (Layman, 1930) Yamaguti, 1934 (new combination reference)
Tubulovesicula muraenesocis Yamaguti, 1934 accepted as Tubulovesicula angusticauda (Nicoll, 1915) Yamaguti, 1934 (original description)
Tubulovesicula spari Yamaguti, 1934 (original description)