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Helicinidae
	A live individual of Helicina rhodostoma
	A live individual of Alcadia conuloides
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Gastropoda
Subclass:	Neritimorpha
Order:	Cycloneritida
Superfamily:	Helicinoidea
Family:	Helicinidae; Férussac, 1822
Genera
	See text
Diversity
	770-1400 species (estimation)

Helicinidae is a family of small tropical land snails which have an operculum. They are terrestrial operculate gastropod mollusks in the superfamily Helicinoidea.

These snails are not at all closely related to the air-breathing land snails, despite a superficial similarity of the shells. The name "Helicinidae" immediately reminds most people of "Helicidae", the most popular group of land snails including e.g. Helix pomatia, but the important two letters "ni" only from the Latin diminutive of the latter name alluding to superficial similarities of otherwise completely different things.

Distribution

These snails are found in tropical and subtropical areas but they have an odd distribution: they are restricted to the Caribbean islands and some Indo-Pacific and Pacific islands, as well as the edge of the Asian and Australian continents. Some species are found in the southern United States, from Louisiana to Florida; others in Central and South America.

Taxonomy

Helicinidae belongs to superfamily Helicinoidea according to the taxonomy of the Gastropoda by Bouchet & Rocroi, 2005).^[2]

This family consists of six following subfamilies (according to the taxonomy of the Gastropoda by Bouchet & Rocroi, 2005):

Helicininae Férussac, 1822 - synonym: Olygyridae Gray, 1847; Bourcierinae Paetel, 1890
Ceratodiscinae Pilsbry, 1927
† Dimorphoptychiinae Wenz, 1938^[3]
Hendersoniinae H. B. Baker, 1926
Stoastomatinae C. B. Adams, 1849
Vianinae H. B. Baker, 1922

Genera

Genera within the family Helicinidae include:

Subfamily Helicininae

Alcadia Gray, 1840
Aphanoconia A. J. Wagner, 1905
Bourciera Pfeiffer, 1852
Ceochasma F. G. Thompson, 1968
Ceratopoma Möllendorff, 1893
Emoda Adams, 1856^[4]
Glyptemoda Clench & Aguayo, 1950^[4]
Helicina Lamarck, 1799 - type genus of the family Helicinidae^[2]
Hemipoma Wagner, 1905
Kosmetopoma A. J. Wagner, 1905
Negopenia Iredale, 1941
Nesiocina Richling & Bouchet, 2013
Ogasawarana Wagner, 1905
Olygyra Say, 1818: synonym of Helicina Lamarck, 1799 (original rank)
Orobophana Wagner, 1905^[5]
Palaeohelicina A. J. Wagner, 1905
Pecoviana Iredale, 1941
Pleuropoma Moellendorff, 1893^[5]
Schasicheila Shuttleworth, 1852
Stoastomops Baker, 1924
Sturanya Wagner, 1905
Sulfurina Möllendorff, 1893

subfamily Ceratodiscinae

Ceratodiscus Simpson & Henderson, 1901 - type genus of the subfamily Ceratodiscinae^[2]

Subfamily † Dimorphoptychiinae

† Dimorphoptychia Sandberger, 1871 - type genus of the subfamily Dimorphoptychiinae^[2]

Subfamily Hendersoniinae

Hendersonia A. J. Wagner, 1905 - type genus of the subfamily Hendersoniinae^[2]
Waldemaria Wagner, 1905

Subfamily Stoastomatinae

Stoastoma C. B. Adams, 1849 - type genus of the subfamily Stoastomatinae^[2]

Subfamily Vianinae

Calidviana Baker, 1954
Calybium Morelet, 1891
Eutrochatella Fischer, 1885
Geophorus Fischer, 1885
Heudeia Crosse, 1885
Lucidella Swainson, 1840
Pseudotrochatella Nevill, 1881
Pyrgodomus Fischer & Crosse, 1893
Viana H. Adams & A. Adams, 1856 - type genus of the subfamily Vianinae^[2]

Subfamily ?

Priotrochatella Fischer, 1893^[4]
Semitrochatella Aguayo & Jaume, 1958^[4]
Sturanyella Pilsbry & Cooke, 1934^[6]
Troschelviana Baker, 1922^[4]
Ustronia Kobelt, 1908^[4]

References

^ Richling I. (2014). "Poorly explored jewels of the tropics: Estimating diversity in non-pulmonate land snails of the family Helicinidae (Gastropoda: Neritopsina)". American Malacological Bulletin 32(2): 246-258. doi:10.4003/006.032.0216.
^ ^a ^b ^c ^d ^e ^f ^g Bouchet, Philippe; Rocroi, Jean-Pierre; Frýda, Jiri; Hausdorf, Bernard; Ponder, Winston; Valdés, Ángel & Warén, Anders (2005). "Classification and nomenclator of gastropod families". Malacologia. 47 (1–2). Hackenheim, Germany: ConchBooks: 1–397. ISBN 3-925919-72-4. ISSN 0076-2997.
^ Wenz W. (1938). "Teil 1: Allgememeiner Teil und Prosobranchia". In: Schindewolf O. H. (ed.) Handbuch der Paläozoologie, Band 6, Gastropoda, Borntraeger, Berlin, 6(1): 1-240. pages 53-54.
^ ^a ^b ^c ^d ^e ^f "Mollusca" Archived 2011-07-18 at the Wayback Machine. Diversidad Biológica Cubana, accessed 23 March 2011.
^ ^a ^b Phil. Trans. R. Soc. Lond. B (1998): 353, 347.
^ Mollusc Specialist Group (1996). Sturanyella carolinarum. In: IUCN 2011. IUCN Red List of Threatened Species. Version 2011.1. <www.iucnredlist.org>. Downloaded on 17 June 2011.