Planaxis
Planaxis sulcatus
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Gastropoda
Subclass:	Caenogastropoda
Superfamily:	Cerithioidea
Family:	Planaxidae
Genus:	Planaxis Lamarck, 1822[1]
Type species
Buccinum sulcatum Born, 1778

Planaxis is a genus of small sea snails, marine gastropod mollusks in the family Planaxidae.^[2]

Species

Species within the genus Planaxis include:

• Planaxis savignyi Deshayes, 1844^[3]
• Planaxis sulcatus (Born, 1791)^[4]
• 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:^[5] 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:^[6] 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)