| Page last updatedSun 07 Sep 2025
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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! This page documents data for Haas (1911), such as genera and species attributed to that publication (including known misspellings, misidentifications, and other unavailable names) as well as taxonomic opinions, if available. Taxonomic opinions refer to uses of genera and species as valid and invalid in that work. The MUSSEL Project Database has moved to a new server, with a new URL! The new address for this page is: https://musselpdb.org/db.php?ty=publ&id=770 Search the database pages:
 
 |  | Publication information Haas, F. 1911. Verh. Naturhist. Ver. Preuß. Rheinl. 68: . Attributed Species Names
  | Unio batavus palatinus Haas, 1911
    Haas, 1911, Verh. Naturhist. Ver. Preuß. Rheinl. 68: 525, pl. 4, fig. 3.
 (intro'd as intra-sp. of Mya batava Maton & Rackett, 1807)
 |  | Unio batavus hexameri Haas, 1911
    Haas, 1911, Verh. Naturhist. Ver. Preuß. Rheinl. 68: 526, pl. 4, fig. 2.
 (intro'd as intra-sp. of Mya batava Maton & Rackett, 1807)
 |  | Unio batavus probavaricus Haas, 1911
    Haas, 1911, Verh. Naturhist. Ver. Preuß. Rheinl. 68: 526, pl. 4, fig. 9.
 (intro'd as intra-sp. of Mya batava Maton & Rackett, 1807)
 |  | Unio crassus heimburgi Haas, 1911
    Haas, 1911, Verh. Naturhist. Ver. Preuß. Rheinl. 68: 527, pl. 6, fig. 20.
 (intro'd as intra-sp. of Unio crassus Retzius, 1788)
 |  |  | Page updated: 08:42:56 Sun 07 Sep 2025 |  |