“Rictaxis”的意思、由来-开放百科全书

词条

Rictaxis

释义

Species
References
External links

{{italic title}}{{Taxobox
| name = Rictaxis
| image = Naturalis Biodiversity Center - RMNH.MOL.229028 - Rictaxis punctocaelatus (Carpenter, 1864) - Acteonidae - Mollusc shell.jpeg
| image_caption = Rictaxis punctocaelatus shells
| regnum = Animalia
| phylum = Mollusca
| classis = Gastropoda
| unranked_superfamilia = clade Heterobranchia
informal group Lower Heterobranchia
| superfamilia = Acteonoidea
| familia = Acteonidae
| subfamilia =
| genus = Rictaxis
| genus_authority = 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 punctostriatus : synonym of Japonactaeon punctostriatus (C. B. Adams, 1840)

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

External links

1 : Acteonidae

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