Odostomia desimana

Odostomia desimana
Apertural view of the shell of Odostomia desimana
Scientific classification
Kingdom: Animalia
Phylum: Mollusca
Class: Gastropoda
(unranked): clade Heterobranchia
clade Euthyneura
clade Panpulmonata
Superfamily: Pyramidelloidea
Family: Pyramidellidae
Genus: Odostomia
Species: O. desimana
Binomial name
Odostomia desimana
Dall & Bartsch, 1906 [1]
Synonyms
  • Odostomia laetea Dunker,1860
  • Odostomia (Odostomia) desimana Dall & Bartsch, 1906

Odostomia desimana is a species of sea snail, a marine gastropod mollusk in the family Pyramidellidae, the pyrams and their allies.[2]

Description

The milk-white shell has a regularly elongate-conic shape. It measures 6.7 mm. The whorls of the protoconch are small, obliquely almost completely immersed in the first of the succeeding whorls, only the periphery of the last two being visible. The nine whorls of the teleoconch are rather high between the sutures, very slightly rounded, slightly angulated at the periphery and scarcely at all shouldered. They are marked by scarcely perceptible lines of growth, and here and there by a faint trace of some very fine microscopic spiral lines. The summit of succeeding whorls falls somewhat anterior to the periphery of the preceding turns, which gives a slightly constricted appearance at the well-impressed suture. The periphery of the body whorl is faintly angulated. The base of the shell is large, well rounded, narrowly umbilicated and somewhat effuse at the junction of the lip and columella. The posterior angle is acute. The outer lip is thin. The long columella is slender, almost straight, somewhat revolute, bearing a strong oblique fold near its insertion. The parietal wall is covered by a thin callus.[1]

Distribution

This species occurs in the Pacific Ocean off Japan.

References

  1. 1 2 Dall & Bartsch, Notes on Japanese, Indo-Pacific and American Pyramidellidae; Proceedings of the U.S. National Museum, vol XXX n° 1452; 1906
  2. ↑ Rosenberg, G. (2011). Odostomia desimana Dall & Bartsch, 1904. Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=588389 on 2011-11-29
External identifiers for Odostomia desimana
WoRMS 588389
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