Unio compressus Heude, 1877
Heude, 1877. Conch. Fluv. Nanking (3): pl. 24, fig. 52.
(renamed Ptychorhynchus incertus Simpson, 1900; homonym of Unio compressus Sowerby, 1829; renamed Unio douglasiae subpressus Heude, 1885)
Type(s): SYNTYPE MNHN_MP_3388, Ngan Noue, Chine.

Ptychorhynchus murinus — Simpson (1900)
Ptychorhynchus murinum — Simpson (1914), Haas (1924), Haas (1969), He & Zhuang (2013)

Unio modestus Heude, 1877
Heude, 1877. Conch. Fluv. Nanking (2): pl. 14, fig. 29.
(renamed Unio simpularius Heude, 1884; homonym of Unio modestus Küster, 1856)
Type(s): SYNTYPE MNHN_MP_3391, Ngan Noue, Chine.

Parreysia (s.s.) simpularis [sic] — Simpson (1900)
Parreysia (s.s.) modesta — Simpson (1914)
Ptychorhynchus simpulare [sic] — Haas (1924)
Ptychorhynchus murinum — Haas (1969), He & Zhuang (2013)

Unio apicellatus Heude, 1883
Heude, 1883. Conch. Fluv. Nanking (8): pl. 63, fig. 126.

Ptychorhynchus apicellatus — Simpson (1900)
Ptychorhynchus apicellatum — Simpson (1914), Haas (1924)
Ptychorhynchus murinum — Haas (1969), He & Zhuang (2013)

Unio murinus Heude, 1883
Heude, 1883. Conch. Fluv. Nanking (8): pl. 62, fig. 121.

Ptychorhynchus murinus — Simpson (1900)
Ptychorhynchus murinum — Simpson (1914), Haas (1924), Haas (1969), Graf & Cummings (2007), Bogan (2010), He & Zhuang (2013), Zieritz et al. (2018), Liu et al. (2020), Graf & Cummings (2021), Bolotov et al. (2023)
Heudeana murinum — Modell (1942)
Heudeana murina — Haas (1969)
— Liu et al. (1979)
Heudeana sp. — Prozorova et al. (2005)

Unio pinchonianus Heude, 1883
Heude, 1883. Conch. Fluv. Nanking (8): pl. 63, fig. 125.

Hyriopsis (s.s.) pinchonianus — Simpson (1900), Simpson (1914)
— Haas (1969), Liu et al. (1979)
Hyriopsis pinchoniana — Graf & Cummings (2007), Bogan (2010)
Pseudodon pinchoniana — He & Zhuang (2013)
Pseudodon pinchonianus — Zieritz et al. (2018), Liu et al. (2020), Graf & Cummings (2021)
Ptychorhynchus murinum — Bolotov et al. (2023)

Unio simpularius Heude, 1884
Heude, 1884. J. de Conch. 32: 20.
(new name for Unio modestus Heude, 1877)

Parreysia (s.s.) simpularis [sic] — Simpson (1900)
Parreysia (s.s.) modesta — Simpson (1914)
Ptychorhynchus simpulare [sic] — Haas (1924)
Ptychorhynchus murinum — Haas (1969), He & Zhuang (2013)

Unio douglasiae subpressus Heude, 1885
Heude, 1885. Conch. Fluv. Nanking (9): pl. 65-65bis.
(new name for Unio compressus Heude, 1877; intro'd as intra-sp. of Unio douglasiae Griffith & Pidgeon, 1833)

Unio douglasiae — Liu et al. (1979)
Nodularia douglasiae — Prozorova et al. (2005)
Ptychorhynchus murinum — He & Zhuang (2013)

Parreysia simpularis Simpson, 1900
‘Heude’ of Authors.
Simpson, 1900. Proc. U.S. Nat. Mus. 22: 845.
Simpson, 1914. Descr. Cat. Naiades: 1122.
Haas, 1924. Abh. Senckenb. Naturf. Ges. 38: 159.
Haas, 1969. Das Tierreich 88: 106.
He & Zhuang, 2013. Freshwater Bivalves China: 95.
(error for Unio simpularius Heude, 1884)

Ptychorhynchus incertus Simpson, 1900
Simpson, 1900. Proc. U.S. Nat. Mus. 22: 851.
(new name for Unio compressus Heude, 1877)

Ptychorhynchus murinus — Simpson (1900)
Ptychorhynchus murinum — Simpson (1914), Haas (1924), Haas (1969), He & Zhuang (2013)

Pseudodon solidus Haas, 1911
Haas, 1911. Nachr. Bl. Dtsch. Malak. Ges. 43: 46.
Haas, 1913. Conch. Cab. 9 (pt. 2, h. 47): pl. 41, fig. 4.
Haas, 1924. Abh. Senckenb. Naturf. Ges. 38: 136.

Pseudodon solidus — Simpson (1914), Bogan (2010)
Pseudodon (s.s.) solidus — Haas (1924), Haas (1969), Graf & Cummings (2007)
— Liu et al. (1979)
Nasus solidus — Prozorova et al. (2005)
Pseudodon pinchoniana — He & Zhuang (2013)
Pseudodon pinchonianus — Graf & Cummings (2021)
Ptychorhynchus murinum — Bolotov et al. (2023)

Unio morinus Paetel, 1890
‘Heude’ Paetel, 1890. Cat. Conch.-Samml. 3: 160.
(error for Unio murinus Heude, 1883)

Ptychorhynchus murinus — Simpson (1900)
Ptychorhynchus murinum — Simpson (1914), Haas (1924), Haas (1969)