Cirsonella

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

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.

Species

Species within the genus Cirsonella include:

• † Cirsonella aedicula Laws, 1936
• Cirsonella africana (Bartsch, 1915)
• † Cirsonella ameliae Tabanelli, 1998
• † Cirsonella amplector Laws, 1944
• † Cirsonella aperta L. Hoffman & C. Little, 2025
• 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 kerguelensis Thiele, 1912
• † Cirsonella laevis (R. M. Johnston, 1880)
• Cirsonella laxa Powell, 1937
• Cirsonella maoria Powell, 1937
• Cirsonella margaritiformis (Dall, 1927)
• Cirsonella micans (A. W. B. Powell, 1931)
• 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 lata (Laseron, 1954): synonym of Wanganella lata (Laseron, 1954)
• 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)

• 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 ISBN 0-00-216906-1
• Taxonomicon info: