Rictaxis

Rictaxis
Rictaxis punctocaelatus shells
Scientific classification
Kingdom: Animalia
Phylum: Mollusca
Class: Gastropoda
(unranked): clade Heterobranchia
informal group Lower Heterobranchia
Superfamily: Acteonoidea
Family: Acteonidae
Genus: Rictaxis
Dall, 1871[1]

Rictaxis is a genus of minute sea snails or "bubble snails", marine gastropod mollusks or micromollusks in the family Acteonidae, the "barrel bubble" snails.[2]

The genus name is derived from Latin words, meaning “open mouth”, and “axis” referring to the columella.

Species

Species within the genus Rictaxis include:

  • Rictaxis albus (Sowerby, 1873)
  • Rictaxis painei (Dall, 1903)
  • Rictaxis punctocaelatus (Carpenter, 1864)
  • Rictaxis sanguinea Valdès, 2008
Species that have been synonymized


  • Rictaxis albus Sowerby, 1873
    • Distribution : South Africa
    • Length : 10–21 mm
    • Description white shell with numerous spiraling white to lightbrown grooves
  • Rictaxis painei Dall, 1903
    • Distribution : America
  • Rictaxis punctocaelatus Carpenter, 1864 Barrel shell; Carpenter's baby bubble (synonym: Acteon punctocaelatus Carpenter, 1864)
    • Distribution : Southern Alaska, British Columbia, California
    • Length : 10–20 mm
    • Description : found in sand from lowtide line to depths up to 50 m; evenly elleptical shell with alternating darker brown and grayish-brown bands; outer lip and columellar folds are whitish; large spire; ovate columella strongly twisted, with a pointed posterior notch and a rounded base.

References

  1. ↑ Dall (1871). Amer. J. Conch. 7: page 136.
  2. ↑ WoRMS (2011). Rictaxis Dall, 1871. Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=160472 on 2011-12-14


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