''Alcadia'' is a

genus Genus ( plural genera ) is a taxonomic rank used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In the hierarchy of biological classification, genus com ...

tropical The tropics are the regions of Earth surrounding the Equator. They are defined in latitude by the Tropic of Cancer in the Northern Hemisphere at N and the Tropic of Capricorn in the Southern Hemisphere at S. The tropics are also referred to ...

and subtropical

land snail A land snail is any of the numerous species of snail that live on land, as opposed to the sea snails and freshwater snails. ''Land snail'' is the common name for terrestrial gastropod mollusks that have shells (those without shells are known as ...

s with an operculum, terrestrial

gastropod The gastropods (), commonly known as snails and slugs, belong to a large taxonomic class of invertebrates within the phylum Mollusca called Gastropoda (). This class comprises snails and slugs from saltwater, from freshwater, and from land. T ...

mollusk Mollusca is the second-largest phylum of invertebrate animals after the Arthropoda, the members of which are known as molluscs or mollusks (). Around 85,000 extant species of molluscs are recognized. The number of fossil species is e ...

s in the family Helicinidae.

Species

Species within the genus ''Alcadia'' include: * '' Alcadia affinis'' C.B. Adams, 1846 * ''

Alcadia bermudezi ''Alcadia'' is a genus of tropical and subtropical land snails with an operculum, terrestrial gastropod mollusks in the family Helicinidae. Species Species within the genus ''Alcadia'' include: * ''Alcadia affinis'' C.B. Adams, 1846 * '' Alc ...

'' Aguayo & Jaume, 1957"Mollusca"
. Diversidad Biológica Cubana, accessed 23 March 2011. * '' Alcadia camagueyana'' Aguayo & Jaume, 1957 * ''

Alcadia concinna ''Alcadia'' is a genus of tropical and subtropical land snails with an operculum, terrestrial gastropod mollusks in the family Helicinidae. Species Species within the genus ''Alcadia'' include: * ''Alcadia affinis'' C.B. Adams, 1846 * '' Alc ...

'' (Gundlach in Pfeiffer, 1857) * '' Alcadia dissimulans'' (Poey, 1858) * '' Alcadia euglypta'' Clench & Aguayo, 1950 * '' Alcadia gonostoma'' (Gundlach in Poey, 1858) * '' Alcadia hispida'' (Pfeiffer, 1839) * '' Alcadia incrustata'' (Gundlach in Pfeiffer, 1859) * ''

Alcadia maxima ''Alcadia maxima'' is a species of tropical and subtropical land snails with an operculum, terrestrial gastropod mollusks in the family Helicinidae Helicinidae is a family of small tropical land snails which have an operculum. They are terr ...

'' Sowerby II, 1842 * '' Alcadia minima'' (d’Orbigny, 1842) * '' Alcadia neebiana'' (Pfeiffer, 1862) * '' Alcadia nitida'' (Pfeiffer, 1839) * '' Alcadia nuda'' (Arango in Pfeiffer, 1866) * '' Alcadia rotunda'' (d’Orbigny, 1842) * ''

Alcadia spectrabilis ''Alcadia'' is a genus of tropical and subtropical land snails with an operculum, terrestrial gastropod mollusks in the family Helicinidae. Species Species within the genus ''Alcadia'' include: * ''Alcadia affinis'' C.B. Adams, 1846 * ''Alca ...

'' (Pfeiffer, 1858) * ''

Alcadia velutina ''Alcadia'' is a genus of tropical and subtropical land snails with an operculum, terrestrial gastropod mollusks in the family Helicinidae. Species Species within the genus ''Alcadia'' include: * ''Alcadia affinis'' C.B. Adams, 1846 * '' Alc ...

'' (Poey, 1858) subgenus ''Idesa'' H. Adams & A. Adams, 1856 Adams H. & Adams A. (1856). ''The genera of Recent Mollusca, Helicinidae'' 2: 300-309, 3: pl. 87. London. ''Idesa'' is on the page 304. * ''

Alcadia conuloides ''Alcadia conuloides'' is a species of tropical land snail with an operculum, a terrestrial gastropod mollusk in the family Helicinidae. Taxonomy Robert John Lechmere Guppy (1895) considered this species synonymous with the taxon ''Schramm ...

'' (Guppy, 1868)

References

Helicinidae Taxa named by John Edward Gray {{Helicinidae-stub