Alcyna

Alcyna is a genus of sea snails, marine gastropod mollusks in the family Trochidae, the top snails.[1]

Alcyna
Drawing of a shell of Alcyna lifuensis
Scientific classification
Kingdom: Animalia
Phylum: Mollusca
Class: Gastropoda
Clade: Vetigastropoda
Order: Trochida
Superfamily: Trochoidea
Family: Trochidae
Genus: Alcyna
A. Adams, 1860
Type species
Alcyna ocellata Adams, A., 1860
Synonyms[1]
  • Euchelus (Nevillia) H. Adams, 1868
  • Nevillia H. Adams, 1868

This genus was previously included in the family Phasianellidae.

Description

The minute shell is similar in form to Phasianella. The aperture is ovate. The columella has a heavy callus, bearing near the base a strong curved denticle projecting into the aperture. The outer lip is simple.[2]

The imperforate shell is acutely ovate. The convex whorls are spirally lirate and longitudinally striate. The columella is callous, and toothed below. The outer lip is smooth or toothed within, and varicose exteriorly.[3]

Species

Species within the genus Alcyna include:[1]

The following species were brought into synonymy:[1]
  • Alcyna flammulata Pilsbry, 1917: synonym of Alcyna subangulata Pease, 1861
  • Alcyna kapiolaniae Pilsbry, 1917: synonym of Alcyna ocellata A. Adams, 1860
  • Alcyna kuhnsi Pilsbry, 1917: synonym of Alcyna ocellata A. Adams, 1860
  • Alcyna lepida A. Adams, 1860: synonym of Alcyna ocellata A. Adams, 1860
  • Alcyna lineata Pease, 1869: synonym of Alcyna subangulata Pease, 1861
  • Alcyna rubra Pease, 1861: synonym of Alcyna ocellata A. Adams, 1860
  • Alcyna striata Pease, 1869: synonym of Alcyna subangulata Pease, 1861
  • Alcyna subangulata flammulata Pilsbry, 1917: synonym of Alcyna subangulata Pease, 1861
  • Alcyna subangulata virgata Pilsbry, 1917: synonym of Alcyna subangulata Pease, 1861
  • Alcyna virgata Pilsbry, 1917: synonym of Alcyna subangulata Pease, 1861
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References
  1. Alcyna A. Adams, 1860. Retrieved through: World Register of Marine Species on 18 December 2018.
  2. G.W. Tryon (1888), Manual of Conchology X; Academy of Natural Sciences, Philadelphia
  3. Tryon (1887), Manual of Conchology IX – Solariidae (by William B. Marshall), Ianthinidae, Trichotropidae, Scalariidae, Cerithiidae, Rissoidae, Littorinidae
  • A. Adams (1860), On some new genera and species of Mollusca from Japan; The Annals and Magazine of Natural History, 1860
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