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Atys (gastropod)

Atys is a genus of very small to medium-sized sea snails, marine opisthobranch gastropod mollusks in the family Haminoeidae.

All the species within the genus Atys are herbivores. They occur in tropical and warm oceans and seas. They are cephalaspideans, part of the suborder of headshield slugs and bubble snails.

The genus was named after Atys, a king of Alba Longa, who was mentioned in ancient Greek texts.

Description

(Description by G.B. Sowerby II) The shell is concealed beneath the mantle of the animal. It is ovate or cylindrical in shape, generally white in color, and notably solid. The surface is transversely striated both above and below the middle section, while the spire remains entirely concealed. The columella is tortuous, and the outer lip is elevated above the spire at its end; additionally, the lip is more or less contracted above the middle of the shell.

These snails have a shell which is very lightweight and translucent, with a sunken spire. The shape of the shell in some species resembles a bubble, and because of this, species in this genus are commonly known as Atys bubble shells or Atys bubble snails. (Several other shelled families within the Cephalaspidea are even more commonly known as "bubble shells" or "bubble snails", for example, the Bullidae.)

The anatomy of the soft parts of most species within this genus has not been studied, but it seems that some of the species in this genus can not reliably be discriminated on the basis of shell characters alone. Unfortunately however, a considerable number of the species were originally named from empty shells, and as a result, their exact identity may be problematic.

Species

Species within the genus Atys include:

Synonyms

  • Atys alayoi <small>Espinosa, Fernandez-Garcès & Ortea, 2004</small>: synonym of Colinatys alayoi <small>(Espinosa & Ortea, 2004)</small> (superseded combination)
  • Atys bathymophila <small>Dall, 1881</small>: synonym of Sabatia bathymophila <small>(Dall, 1881)</small> (superseded combination)
  • † Atys brocchii <small>Michelotti, 1847</small>: synonym of † Cylichna brocchii <small>(Michelotti, 1847)</small> (superseded combination)
  • Distribution : Mediterranean, Turkey
  • Atys canariensis <small>E. A. Smith, 1872</small>: synonym of Weinkauffia turgidula <small>(Forbes, 1844)</small> (junior subjective synonym)
  • Atys castus <small>Carpenter, 1864</small> clean glassy-bubble: synonym of Aliculastrum exaratum<small>(P. P. Carpenter, 1857)</small>
  • Distribution : Baja California, Mexico
  • Length : 10&nbsp;mm
  • Atys chimera <small>Baker & Hanna, 1927</small>: synonym of Aliculastrum exaratum <small>(P. P. Carpenter, 1857)</small>
  • Distribution : Baja California, Mexico
  • Length : 7&nbsp;mm
  • Atys constrictus <small>Habe, 1952</small>: synonym of Limulatys constrictus <small>Habe, 1952</small>
  • Atys cornuta <small>Pilsbry, 1917</small>: synonym of Limulatys debilis <small>(Pease, 1860)</small>: synonym of Aliculastrum debile <small>(Pease, 1860)</small>
  • Atys costulosa <small>Pease, 1869</small> : synonym of Atys costulosus <small>Pease, 1869</small> (incorrect gender of species epithet)
  • Atys curta <small>A. Adams, 1850</small> striate bubble: synonym of Liloa mongii <small>(Audouin, 1826)</small>
  • Atys cylindrae <small>(Helbling, 1779)</small>: synonym of Aliculastrum cylindricum <small>(Helbling, 1779)</small> (misspelling)
  • Atys cylindrella <small>Nowell-Usticke, 1971</small>: synonym of Atys riiseanus <small>Mörch, 1875</small> (junior subjective synonym)
  • Atys cylindricus <small>(Helbling, 1779)</small>: synonym of Aliculastrum cylindricum <small>(Helbling, 1779)</small>
  • Atys cylindricum <small>(Helbling, 1779)</small>: synonym of Aliculastrum cylindricum <small>(Helbling, 1779)</small>
  • Atys darnleyensis <small>Brazier, 1879</small>: synonym of Atys hyalinus <small>R. B. Watson, 1883</small> (possible senior synonym)
  • Atys debilis <small>Pease, 1871</small>: synonym of Aliculastrum debile <small>(Pease, 1860)</small> (original combination)
  • Distribution : Hawaii
  • Length : 10&nbsp;mm
  • Description : on sandy bottoms where they burrow through the sand with their flattened headshield for food like small crustaceans.
  • Atys densa <small>Brazier, 1877</small>: synonym of Atys densus <small>Brazier, 1877</small> (incorrect gender of species epithet)
  • Atys dubiosa <small>Brazier, 1879</small>: synonym of Osorattis dubiosa <small>(Brazier, 1877)</small> (superseded combination)
  • Atys ferruginosa <small>(A. Adams, 1850)</small>: synonym of Atys naucum <small>(Linnaeus, 1758)</small>
  • Atys flavovirens <small>Melvill & Standen, 1903</small>: synonym of Vellicolla flavovirens <small>(Melvill & Standen, 1903)</small> (superseded combination)
  • Atys fukuokaensis <small>Habe, 1852</small>: synonym of Mimatys fukuokaensis <small>Habe, 1952</small>
  • Distribution: Japan
  • Atys jeffreysi <small>Weinkauff, 1868</small>: synonym of Roxaniella jeffreysi <small>(Weinkauff, 1866)</small>
  • Distribution : Canary Islands, Madeira, Azores, Mediterranean
  • Atys lithiensis <small>Sturany, 1903</small>: synonym of Roxania lithensis <small>(Sturany, 1903)</small> (original combination)
  • Atys macandrewii <small>E. A. Smith, 1872</small>: synonym of Weinkauffia macandrewii <small>(E. A. Smith, 1872)</small>
  • Distribution : Caribbean, Brazil, Eastern Atlantic Ocean, Azores, Canaries, Cape Verde Islands
  • Length : 7.3&nbsp;mm
  • Description : found at depths of up to 75 m
  • Atys multistriata <small>Schepman, 1913</small>: synonym of Roxaniella multistriata <small>(Schepman, 1913)</small> (wrong grammatical agreement of species epithet)
  • Distribution : Micronesia, Philippines
  • Length : 12&nbsp;mm
  • Description : short headshield, broadened anteriorly, with internal black eyes. Short posterior lobes. Triangulate parapodia cover the anterior of the shell; short, rounded tail; The translucent Hancock’s organs appear as a thin low profile ridge. Translucent white animal with brown spots and clusters of opaque white dots; thin, elongate, ovoid shell; inner margin of the outer lip extends above the apex; slightly curved columella; deep umbilicus behind the fold
  • Atys muscaria <small>Gould, 1859</small>: synonym of Vellicolla muscaria <small>(A. A. Gould, 1859)</small> (superseded combination)
  • Atys okamotoi <small>Habe, 1952</small>: synonym of Vellicolla okamotoi <small>(Habe, 1952)</small>
  • Atys palmarum <small>Hedley, 1912</small>: synonym of Micratys ovum <small>Habe, 1952</small> (doubtful synonym)
  • Atys pittmani <small>Too, Carlson, Hoff & Malaquias, 2014</small>: synonym of Roxaniella pittmani <small>(Too, Carlson, Hoff & Malaquias, 2014)</small> (original combination) Roxaniella pittmani (Too, Carlson, Hoff & Malaquias, 2014) (original combination)
  • Atys porcellana <small>Gould, 1859</small>: synonym of Liloa porcellana <small>(A. A. Gould, 1859)</small> (superseded combination)
  • Atys pransa <small>Hedley, 1904</small>: synonym of Spissitydeus pransa <small>(Hedley, 1904)</small> (superseded combination)
  • Atys pulchra <small>Brazier, 1879</small>: synonym of Mnestia pulchra <small>(Brazier, 1877)</small> (original combination)
  • Atys reliqua <small>Iredale, 1936</small>: synonym of Weinkauffia reliqua <small>(Iredale, 1936)</small>
  • Atys scrobiculata <small>A. Adams, 1862</small>: synonym of Limulatys scrobiculatus (<small>A. Adams, 1862)</small> (superseded combination)
  • Atys semistriata <small>Pease, 1860</small>: synonym of Atys semistriatus <small>Pease, 1860</small> (incorrect grammatical agreement of specific epithet)
  • Atys supracancellata <small>Schepman, 1913</small>: synonym of Sabatia supracancellata <small>(Schepman, 1913)</small>
  • Atys tortuosus <small>A. Adams, 1850</small>: synonym of Vellicolla tortuosa <small>(A. Adams, 1850)</small>
  • Atys tremens <small>(Iredale, 1936)</small>: synonym of Weinkauffia tremens <small>(Iredale, 1936)</small>
  • Atys turgidula <small>(Forbes, 1844)</small> : synonym of Weinkauffia turgidula <small>(Forbes, 1844)</small> (superseded combination)
  • † Atys turgidula <small>(F. Sandberger, 1859)</small>: synonym of † Atys extumidus <small>Pacaud, 2024</small> (junior homonym)
  • Atys ukulele <small>Too, Carlson, Hoff & Malaquias, 2014</small>: synonym of Weinkauffia ukulele <small>(Too, Carlson, Hoff & Malaquias, 2014)</small> (original combination)
  • Atys volvulina <small>A. Adams, 1862</small>: synonym of Aliculastrum volvulina <small>(A. Adams, 1862</small>) (superseded combination)

References

Books

  • Redfern, Colin, 2001, Bahamian Seashells, a thousand species from Abaco, Bahamas, published by BahamianSeashells.com Inc

External links