Cirsonella Explained

Cirsonella is a genus of small sea snails, marine gastropod molluscs in the family Skeneidae.^[1]

Description

(Original description by G. Angas) The minute, smooth shell is globosely turbinate. It is narrowly umbilicated. The aperture is circular. The continuous peristome is slightly thickened.^[2]

Species

Species within the genus Cirsonella include:

• † Cirsonella aedicula Laws, 1936
• Cirsonella africana (Bartsch, 1915)
• † Cirsonella amplector Laws, 1944
• Cirsonella ateles (Dautzenberg & H. Fischer, 1896)
• Cirsonella carinata (Hedley, 1903)
• † Cirsonella congrua (Laws, 1941)
• Cirsonella consobrina Powell, 1930
• Cirsonella cubitalis (Hedley, 1907)
• Cirsonella densilirata Suter, 1908
• Cirsonella extrema Thiele, 1912
• Cirsonella floridensis (Dall, 1927)
• † Cirsonella funata Lozouet, 1998
• Cirsonella gaudryi (Dautzenberg & Fischer H., 1896)
• Cirsonella georgiana (Dall, 1927)
• Cirsonella globosa (Pelseneer, 1903)
• Cirsonella kerguelenensis Thiele, 1912
• Cirsonella lata (Laseron, 1954)
• Cirsonella laxa Powell, 1937
• Cirsonella maoria Powell, 1937
• Cirsonella margaritiformis (Dall, 1927)
• Cirsonella microscopia (Gatliff & Gabriel, 1910)
• Cirsonella ovata Hedley, 1899
• Cirsonella paradoxa Powell, 1937
• Cirsonella parvula Powell, 1926
• Cirsonella pisiformis Powell, 1937
• † Cirsonella proava (Marwick, 1931)
• Cirsonella propelaxa Dell, 1956
• Cirsonella reflecta Laseron, 1954
• Cirsonella romettensis (Granata-Grillo, 1877)
• Cirsonella variecostata Powell, 1940
• Cirsonella waikukuensis Powell, 1937
• † Cirsonella waimamakuica Laws, 1948
• Cirsonella weldii (Tenison-Woods, 1877)
• † Cirsonella zeornata Laws, 1948

Species brought into synonymy:

• Cirsonella accelerans C. A. Fleming, 1948: synonym of Cirsonella variecostata Powell, 1940
• Cirsonella australis Angas, 1877: synonym of Cirsonella weldii (Tenison-Woods, 1877)
• Cirsonella granum Murdoch and Suter, 1906: synonym of Lissotesta granum (Murdoch & Suter, 1906)
• Cirsonella kerguelenensis [sic]: synonym of Cirsonella kerguelensis Thiele, 1912
• Cirsonella naticoides (Hedley, 1907): synonym of Cirsonella weldii (Tenison Woods, 1877)
• Cirsonella neozelanica Murdoch, 1899: synonym of Suterilla neozelanica (Murdoch, 1899)
• Cirsonella perplexa Laseron, 1954: synonym of Cirsonella reflecta Laseron, 1954
• Cirsonella simplex Powell, 1937: synonym of Acremodontina simplex (Powell, 1937)
• Cirsonella translucida May, 1915: synonym of Acremodontina translucida (May, 1915)

References

• Angas, 1877 Proceedings of the Zoological Society of London, 1877: 38
• Iredale, T. & McMichael, D.F. (1962). A reference list of the marine Mollusca of New South Wales. Memoirs of the Australian Museum. 11 : 1-109
• Lozouet, P., 1998. Nouvelles espèces de gastéropodes (Mollusca: Gastropoda) de l'Oligocène et du Miocène inférieur d'Aquitaine (sud-ouest de la France). Cossmanniana 5(3-4): 61-102
• Gofas, S.; Le Renard, J.; Bouchet, P. (2001). Mollusca, in: Costello, M.J. et al. (Ed.) (2001). European register of marine species: a check-list of the marine species in Europe and a bibliography of guides to their identification. Collection Patrimoines Naturels, 50: pp. 180–213
• Spencer, H.; Marshall. B. (2009). All Mollusca except Opisthobranchia. In: Gordon, D. (Ed.) (2009). New Zealand Inventory of Biodiversity. Volume One: Kingdom Animalia. 584 pp

Further reading

• Powell A. W. B., New Zealand Mollusca, William Collins Publishers Ltd, Auckland, New Zealand 1979
• Taxonomicon info: http://www.taxonomy.nl/taxonomicon/TaxonTree.aspx?id=133191

Notes and References

1. Bouchet, P.; Gofas, S. (2012). Cirsonella. Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=138494 on 2012-05-23
2. https://www.biodiversitylibrary.org/page/28510582#page/65/mode/1up G. Angas, Descriptions of two genera and twenty species of marine shells from New South Wales; Proceedings of the Zoological Society of London, 1877