''Alcadia'' is a

genus Genus ( plural genera ) is a taxonomic rank used in the biological classification of living and fossil organisms as well as viruses. In the hierarchy of biological classification, genus comes above species and below family. In binomial nom ...

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 snails with an operculum,

terrestrial Terrestrial refers to things related to land or the planet Earth. Terrestrial may also refer to: * Terrestrial animal, an animal that lives on land opposed to living in water, or sometimes an animal that lives on or near the ground, as opposed to ...

gastropod

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 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, d ...

Species

Species within the genus ''Alcadia'' include: * ''

Alcadia affinis ''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 * '' Al ...

'' C.B. Adams, 1846 * '' Alcadia bermudezi'' Aguayo & Jaume, 1957"Mollusca"
. Diversidad Biológica Cubana, accessed 23 March 2011. * ''

Alcadia camagueyana ''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 * '' Al ...

'' Aguayo & Jaume, 1957 * '' Alcadia concinna'' (Gundlach in Pfeiffer, 1857) * ''

Alcadia dissimulans ''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) * ''

Alcadia euglypta ''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 ...

'' Clench & Aguayo, 1950 * ''

Alcadia gonostoma ''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 Poey, 1858) * ''

Alcadia hispida ''Alcadia hispida'' is a species of an operculate land snail, terrestrial gastropod mollusk in the family Helicinidae. Distribution This species lives in Cuba.

'' (Pfeiffer, 1839) * ''

Alcadia incrustata ''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, 1859) * '' Alcadia maxima'' Sowerby II, 1842 * ''

Alcadia minima ''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 ...

'' (d’Orbigny, 1842) * ''

Alcadia neebiana ''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 ...

'' (Pfeiffer, 1862) * ''

Alcadia nitida ''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 ...

'' (Pfeiffer, 1839) * ''

Alcadia nuda ''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 ...

'' (Arango in Pfeiffer, 1866) * ''

Alcadia rotunda ''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 ...

'' (d’Orbigny, 1842) * '' Alcadia spectrabilis'' (Pfeiffer, 1858) * '' Alcadia velutina'' (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'' (Guppy, 1868)

References

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