Odostomia deliciosa

Odostomia deliciosa is a species of sea snail, a marine gastropod mollusk in the family Pyramidellidae, the pyrams and their allies.[1][2]

Odostomia deliciosa
Apertural view of the shell of Odostomia deliciosa
Scientific classification
Kingdom:
Animalia
Phylum:
Mollusca
Class:
Gastropoda
(unranked):
clade Heterobranchia
clade Euthyneura
clade Panpulmonata
Superfamily:
Pyramidelloidea
Family:
Pyramidellidae
Genus:
Odostomia
Species:
O. deliciosa
Binomial name
Odostomia deliciosa
Dall & Bartsch, 1907
Synonyms

Odostomia (Evalea) deliciosa Dall & Bartsch, 1907 (basionym)

R.T. Abbott (1974) considered this species a synonym of Odostomia tenuisculpta Carpenter, 1864 [3]

Description

The small shell is elongate-conic and translucent to milk-white. It measures 4 mm. The nuclear whorls are small and deeply immersed in the first of the succeeding turns, above which only a portion of the last turn is visible. The six post-nuclear whorls are moderately rounded, very weakly roundly shouldered at the summit and separated by a strongly marked suture. A narrow band appears about the summit showing its junction with the preceding turn. The periphery and the base of the body whorl is inflated and well rounded. The entire surface of the base and the spire is marked by very fine lines of growth and numerous microscopic wavy spiral striations. The aperture is rather large, somewhat effuse anteriorly. The posterior angle is acute. The outer lip is thin. The columella is rather stout, strongly curved, and revolute, reinforced by the attenuated base, and covered with a strong fold at its insertion. This fold can be seen through the transparent shell as a quite strong lamella on the pillar of the turns.[4]

Distribution

This species occurs in the Pacific Ocean off California.

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References
  1. Rosenberg, G. (2011). Odostomia deliciosa Dall & Bartsch, 1907. Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=581126 on 2011-10-26
  2. Turgeon, D.; Quinn, J.F.; Bogan, A.E.; Coan, E.V.; Hochberg, F.G.; Lyons, W.G.; Mikkelsen, P.M.; Neves, R.J.; Roper, C.F.E.; Rosenberg, G.; Roth, B.; Scheltema, A.; Thompson, F.G.; Vecchione, M.; Williams, J.D. (1998). Common and scientific names of aquatic invertebrates from the United States and Canada: mollusks. 2nd ed. American Fisheries Society Special Publication, 26. American Fisheries Society: Bethesda, MD (USA). ISBN 1-888569-01-8. IX, 526 + cd-rom pp.
  3. Abbott, R.T. (1974). American Seashells: the marine Mollusca of the Atlantic and Pacific coasts of North America. Second edition. Van Nostrand Reinhold: New York. ISBN 0-442-20228-8. 663 pp.
  4. William Healy Dall and Paul Bartsch , "A Monograph of West American Pyramidellid Mollusks" , Smithsonian Institution, 1909
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