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 | The Freshwater Mussels (Unionoida) of the World (and other less consequential bivalves)FM(U)otW(aolcb) is the web version of the MUSSEL Project Database. Follow the links to browse the data or use the custom Google search field. Either way, you win! 
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 Publication Haas (1912): summarypublication summary
 Complete CitationHaas, F. 1912. Die Unioniden. [in] H.C. Küster, Systematisches Conchylien-Cabinet von Martini und Chemnitz 9 (pt. 2, h. 46): 113-136, pls. 30-35. Available electronically. Attributed Nominal GeneraLeiovirgus Haas, 1912Haas, 1912. Conch. Cab. 9 (pt. 2, h. 46): 132.
 Type species: Unio misoolensis Schepman, 1897 (orig. desig.) = Hyridella misoolensis
 Margaritanopsis Haas, 1910Haas, 1910. Conch. Cab. 9 (pt. 2, h. 42): pl. 12.
 Haas, 1912. Conch. Cab. 9 (pt. 2, h. 46): 121.
 Haas, 1913. Nachr. Bl. Dtsch. Malak. Ges. 45: 33.
 Type species: Unio laosensis Lea, 1863 (monotypy) = Gibbosula laosensis
 Protunio Haas, 1912Haas, 1912. Conch. Cab. 9 (pt. 2, h. 46): pl. 32.
 Haas, 1913. Nachr. Bl. Dtsch. Malak. Ges. 45: 37.
 Haas, 1919. Conch. Cab. 9 (pt. 2, h. 51): 257.
 Type species: Unio messageri Bavay & Dautzenberg, 1901 (orig. desig.) = Protunio messageri
 Schepmania Haas, 1910Haas, 1910. Conch. Cab. 9 (pt. 2, h. 42): pl. 12.
 Haas, 1912. Conch. Cab. 9 (pt. 2, h. 46): 124.
 Haas, 1913. Nachr. Bl. Dtsch. Malak. Ges. 45: 33.
 Type species: Unio nieuwenhuisi Schepman, 1898 (sub. desig. by Haas, 1912: 124) = Schepmania nieuwenhuisi
 Unionella Haas, 1913Haas, 1912. Conch. Cab. 9 (pt. 2, h. 46): pl. 31.
 Haas, 1913. Nachr. Bl. Dtsch. Malak. Ges. 45: 37.
 Haas, 1914. Conch. Cab. 9 (pt. 2, h. 50): 250.
 (homonym of Etheridge, 1888; renamed Unionetta Haas, 1955)
 Type species: Unio fabagina Deshayes & Jullien, 1876 (orig. desig.) = Unionetta fabagina
Attributed Nominal Species| Arcidopsis footei Haas, 1912‘Theobald’  of Authors.
 Haas, 1912. Conch. Cab. 9 (pt. 2, h. 46): 121, pl. 11, fig. 2.
 Prashad, 1920. Rec. Ind. Mus. 19: 165.
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 | Trapezoideus prashadi Haas, 1922
  Haas, 1912. Conch. Cab. 9 (pt. 2, h. 46): 121, pl. 11, fig. 2 [as ‘Arcidopsis footei’]. Prashad, 1920. Rec. Ind. Mus. 19: 165 [as ‘Arcidopsis footei’].
 Haas, 1922. Senckenbergiana 4: 101.
 Type(s): TYPE SMF_3614, Mysore.
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 | Trapezoideus zayleiwanensis Haas, 1912
  ‘Preston’ Haas, 1912. Conch. Cab. 9 (pt. 2, h. 46): pl. 33, fig. 1. |  |
 | Unio pahoembaensis Haas, 1912‘Martens’ Haas, 1912. Conch. Cab. 9 (pt. 2, h. 46): pl. 28, figs. 1-2.
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 | Unio penisatus Simpson, 1900‘Crosse & Fischer’  of Authors.
 Simpson, 1900. Proc. U.S. Nat. Mus. 22: 853.
 Haas, 1912. Conch. Cab. 9 (pt. 2, h. 46): 135.
 Simpson, 1914. Descr. Cat. Naiades: 1155.
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 | Unio sella Haas, 1912‘Tapparone-Canefri, in manuscript’ Haas, 1912. Conch. Cab. 9 (pt. 2, h. 46): 122.
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 Taxonomic OpinionsArcidopsis footei (Theobald, 1876) Ctenodesma (s.s.) borneensis (Issel, 1874) = Ctenodesma borneensis+ Unio plicatulus Lea, 1859
 + Unio pensitatus Fischer & Crosse, 1894
 Margaritanopsis laosensis (Lea, 1863) = Gibbosula laosensis+ Unio sula Simpson, 1900
 + Unio sella Haas, 1912
 Nodularia (sec. Scabies) nucleus (Lea, 1856) = Scabies nucleus Pseudobaphia biesiana (Heude, 1877) Schepmania nieuwenhuisi (Schepman, 1898) Schepmania parcesculpta (von Martens, 1903) Virgus (s.s.) beccarianus (Tapparone Canefri, 1883) = Virgus beccarianus Virgus (s.s.) mattirolii (Tapparone Canefri, 1883) = Virgus beccarianus Virgus (sec. Leiovirgus) misoolensis (Schepman, 1897) = Hyridella misoolensis |