# Planaxis

Planaxis is a genus of small sea snails, marine gastropod molluscs in the family Planaxidae.

## Species

Species within the genus Planaxis include:
* Planaxis savignyi Deshayes, 1844
* Planaxis sulcatus (Born, 1791)
* Planaxis suturalis E.A. Smith, 1872
* Planaxis virgatus E. A. Smith, 1872

### Species brought into synonymy

* Planaxis (Supplanaxis) Thiele, 1929: synonym of Supplanaxis Thiele, 1929
* Planaxis abbreviata Pease, 1865: synonym of Planaxis niger Quoy & Gaimard, 1833
* Planaxis acuta Krauss, 1848: synonym of Supplanaxis acutus (Krauss, 1848)
* Planaxis acutus Krauss, 1848: synonym of Supplanaxis acutus (Krauss, 1848)
* Planaxis affinis Risso, 1826: synonym of Nassarius incrassatus (Strøm, 1768): synonym of Tritia incrassata (Strøm, 1768)
* Planaxis akuana Rehder, 1980: synonym of Hinea akuana (Rehder, 1980)
* Planaxis albersii Dunker, 1853: synonym of Planaxis atropurpurea Récluz, 1843
* Planaxis areolatus Lesson, 1842: synonym of Nassarius concinnus (Powys, 1835)
* Planaxis atra Pease, 1869: synonym of Planaxis niger Quoy & Gaimard, 1833
* † Planaxis aulacophorus Cossmann, 1889: synonym of † Hinea fischeri (de Raincourt, 1884)
* † Planaxis beaumonti Bayan, 1870: synonym of † Supplanaxis beaumonti (Bayan, 1870) (original combination)
* Planaxis beudantiana Risso, 1826: synonym of Nassarius cuvierii (Payraudeau, 1826): synonym of Tritia cuvierii (Payraudeau, 1826)
* Planaxis brevis Quoy & Gaimard, 1833: synonym of Planaxis sulcatus (Born, 1778)
* Planaxis buccinea A. Adams, 1853: synonym of Planaxis buccineus A. Adams, 1853 (nomen dubium) (incorrect grammatical agreement of specific epithet)
* Planaxis buccinoides Deshayes, 1828: synonym of Planaxis sulcatus (Born, 1778)
* Planaxis canaliculata Duval, 1840: synonym of Planaxis canaliculatus Duval, 1840: synonym of Planaxis planicostatus G. B. Sowerby I, 1825: synonym of Supplanaxis planicostatus (G. B. Sowerby I, 1825) (incorrect gender agreement of specific epithet)
* Planaxis canaliculatus Duval, 1840: synonym of Planaxis planicostatus G. B. Sowerby I, 1825: synonym of Supplanaxis planicostatus (G. B. Sowerby I, 1825)
* Planaxis cingulata Gould, 1861: synonym of Cronia avenacea|Cronia (Usilla) avenacea (Lesson, 1842): synonym of Usilla avenacea (Lesson, 1842) (junior homonym of Planaxis cingulata A. Adams, 1853; Planaxis gouldii E. A. Smith, 1872 is a replacement name.)
* Planaxis circinatus Lesson, 1842: synonym of Planaxis planicostatus G. B. Sowerby I, 1825: synonym of Supplanaxis planicostatus ' (G. B. Sowerby I, 1825)
* †Planaxis dautzenbergi Glibert, 1949: synonym of † Stosicia planaxoides (Grateloup, 1838): synonym of † Stosicia buccinalis (Grateloup, 1828)
* Planaxis decollata Quoy & Gaimard, 1833: synonym of Fissilabia decollata (Quoy & Gaimard, 1833)
* Planaxis desmarestiana Risso, 1826: synonym of Nassarius incrassatus (Strøm, 1768)
* Planaxis discrepans Risso, 1826: synonym of Nassarius corniculum (Olivi, 1792)
* Planaxis donatiana Risso, 1826: synonym of Nassarius cuvierii (Payraudeau, 1826): synonym of Tritia cuvierii (Payraudeau, 1826)
* Planaxis eboreus E. A. Smith, 1872: synonym of Angiola lineata (da Costa, 1778): synonym of Hinea lineata (da Costa, 1778)
* Planaxis fasciata Pease, 1868: synonym of Angiola punctostriata (E. A. Smith, 1872)
* Planaxis fasciatus Pease, 1868: synonym of Angiola fasciata (Pease, 1868)
* † Planaxis fischeri de Raincourt, 1884: synonym of † Hinea fischeri (de Raincourt, 1884) (original combination)
* Planaxis fitcheliana Risso, 1826: synonym of Nassarius cuvierii (Payraudeau, 1826): synonym of Tritia cuvierii (Payraudeau, 1826)
* Planaxis gouldii Smith, 1872: synonym of Cronia (Usilla) avenacea (Lesson, 1842)
* Planaxis griseus Brocchi, 1821: synonym of Planaxis savignyi Deshayes, 1844
* Planaxis hanleyi E. A. Smith, 1872: synonym of Supplanaxis niger (Quoy & Gaimard, 1833)
* Planaxis inepta Gould, 1861: synonym of Hinea inepta (Gould, 1861) (original combination)
* Planaxis labiosa A. Adams, 1853: synonym of Angiola labiosa (A. Adams, 1853): synonym of Hinea zonata (A. Adams, 1853)
* Planaxis laevigata Risso, 1826: synonym of Nassarius granum (Lamarck, 1822)
* Planaxis lineatus (da Costa, 1778): synonym of Angiola fasciata (da Costa, 1778)
* Planaxis lineolata Risso, 1826: synonym of Nassarius cuvierii (Payraudeau, 1826)
* Planaxis lineolata Gould, 1849: synonym of Angiola punctostriata (E. A. Smith, 1872)
* Planaxis lineolatus Gould, 1849: synonym of Angiola punctostriata (E. A. Smith, 1872)
* Planaxis longispira E.A. Smith, 1872: synonym of Angiola longispira (E.A. Smith, 1872): synonym of Hinea longispira (E. A. Smith, 1872) (original combination)
* Planaxis loques Risso, 1826: synonym of Nassarius cuvierii (Payraudeau, 1826): synonym of Tritia cuvierii (Payraudeau, 1826)
* Planaxis mamillata Risso, 1826: synonym of Nassarius nitidus (Jeffreys, 1867): synonym of Tritia nitida (Jeffreys, 1867) (dubious synonym)
* Planaxis menkeanus Dunker, 1862: synonym of Planaxis sulcatus (Born, 1778)
* Planaxis molliana Risso, 1826: synonym of Nassarius cuvierii (Payraudeau, 1826): synonym of Tritia cuvierii (Payraudeau, 1826)
* Planaxis mollis G. B. Sowerby I, 1823: synonym of Hinea brasiliana (Lamarck, 1822)
* Planaxis nancyae Petuch, 2013: synonym of Supplanaxis nancyae (Petuch, 2013) (original combination)
* Planaxis nicobaricus Frauenfeld, 1866: synonym of Planaxis niger Quoy & Gaimard, 1833
* Planaxis niger Quoy & Gaimard, 1833: synonym of Supplanaxis niger (Quoy & Gaimard, 1833)
* Planaxis nigra [sic] : synonym of Planaxis niger Quoy & Gaimard, 1833
* Planaxis nigritella Forbes, 1852: synonym of Planaxis obsoletus Menke, 1851
* Planaxis nucleola Mörch, 1876: synonym of Supplanaxis nucleus (Bruguière, 1789)
* Planaxis nucleus (Bruguière, 1789): synonym of Supplanaxis nucleus (Bruguière, 1789)
* Planaxis obscura A. Adams, 1853: synonym of Planaxis sulcatus (Born, 1778)
* Planaxis obsoletus Menke, 1851: synonym of Supplanaxis obsoletus (Menke, 1851) (original combination)
* Planaxis olivacea Risso, 1826: synonym of Nassarius corniculum (Olivi, 1792): synonym of Tritia corniculum (Olivi, 1792)
* Planaxis pigra Forbes, 1852: synonym of Hinea brasiliana (Lamarck, 1822)
* Planaxis piliger Philippi, 1849: synonym of Holcostoma piliger (Philippi, 1849)
* Planaxis planicostatus G.B. Sowerby, 1825: synonym of Supplanaxis planicostatus (G. B. Sowerby I, 1825) (original combination)
* Planaxis punctorostratus: synonym of Angiola punctostriata] (E. A. Smith, 1872): synonym of Hinea punctostriata (E. A. Smith, 1872)
* Planaxis punctostriata Smith, 1872: synonym of Angiola punctostriata (Smith E.A., 1872): synonym of Hinea punctostriata (E. A. Smith, 1872)
* Planaxis raricosta Risso, 1826: synonym of Nassarius corniculum (Olivi, 1792): synonym of Tritia corniculum (Olivi, 1792)
* Planaxis riparia Risso, 1826: synonym of Nassarius cuvierii (Payraudeau, 1826): synonym of Tritia cuvierii (Payraudeau, 1826)
* Planaxis rosacea Risso, 1826: synonym of Nassarius incrassatus (Strøm, 1768): synonym of Tritia incrassata (Strøm, 1768)
* Planaxis semisulcatus G. B. Sowerby I, 1823: synonym of Supplanaxis nucleus (Bruguière, 1789)
* Planaxis similis E. A. Smith, 1872: synonym of Planaxis niger Quoy & Gaimard, 1833
* Planaxis striatulus Philippi, 1851: synonym of Hinea zonata (A. Adams, 1853)
* Planaxis tenuis Risso, 1826: synonym of Nassarius cuvierii (Payraudeau, 1826): synonym of Tritia cuvierii (Payraudeau, 1826)
* Planaxis trifasciata Risso, 1826: synonym of Nassarius corniculum (Olivi, 1792): synonym of Tritia corniculum (Olivi, 1792)
* Planaxis turulosa Risso, 1826: synonym of Nassarius turulosus (Risso, 1826): synonym of Tritia turulosa (Risso, 1826) (original combination)
* Planaxis undulata Lamarck, 1822: synonym of Planaxis sulcatus (Born, 1778)
* Planaxis zonatus A. Adams, 1853: synonym of Hinea zonata (A. Adams, 1853) (original combination)