Catenulida (original description)
Gyratrix attemsi Graff, 1913 accepted as
Gyratricella attemsi (Graff, 1913) Karling, 1955 (additional source)
Haplorhynchella Meixner, 1924 (original description)
Haplorhynchella paludicola Meixner, 1924 (original description)
Koinocystididae Meixner, 1924 (original description)
Koinocystis Meixner, 1924 (original description)
Koinocystis neocomensis (Fuhrmann, 1904) Meixner, 1924 (new combination reference)
Koinocystis sophiae (Graff, 1905) Meixner, 1924 accepted as
Itaipusa sophiae (v.Graff, 1905) Karling, 1978 (new combination reference)
Polycystidae accepted as
Polycystididae Graff, 1905 (additional source)
Polycystis (Acrorhynchus) caledonica (Claparède, 1861) Meixner, 1924 accepted as
Acrorhynchides caledonicus (Claperede, 1861) Strand, 1928 (new combination reference)
Polycystis caledonica (Claparède, 1861) Meixner, 1924 accepted as
Acrorhynchides caledonicus (Claperede, 1861) Strand, 1928 (new combination reference)
Polycystis crocea (Fabricius, 1826) Graff, 1905 accepted as
Graffiellus croceus (Fabricius, 1826) Hornung, 2016 (additional source)
Polycystis goettei Bresslau, 1906 accepted as
Opisthocystis goettei (Bresslau, 1906) Sekera, 1911 (additional source)
Polycystis mamertina (Graff, 1874) Graff, 1905 accepted as
Progyrator mamertinus (Graff, 1874) Reisinger, 1926 (additional source)
Polycystis naegelii Kölliker, 1845 (additional source)
Trigonostomum breitfussi (Graff, 1905) Meixner, 1924 (new combination reference)
Trigonostomum lilliei (Graff, 1911) Meixner, 1924 (new combination reference)
Trigonostomum marki Graff, 1911 accepted as
Trigonostomum penicillatum (Schmidt, 1857) Graff, 1905 (additional source)
Trigonostomum venenosum (Uljanin, 1870) Meixner, 1924 (new combination reference)