Odostomia hemphilli

Odostomia hemphilli is a species of sea snail, a marine gastropod mollusk in the family Pyramidellidae, the pyrams and their allies.[1][2][3]

Odostomia hemphilli
Apertural view of the shell of Odostomia hemphilli
Scientific classification
Kingdom:
Animalia
Phylum:
Mollusca
Class:
Gastropoda
(unranked):
clade Heterobranchia
clade Euthyneura
clade Panpulmonata
Superfamily:
Pyramidelloidea
Family:
Pyramidellidae
Genus:
Odostomia
Species:
O. hemphilli
Binomial name
Odostomia hemphilli
Dall & Bartsch, 1909
Synonyms

Odostomia (Miralda) hemphilli Dall & Bartsch, 1909

Description

The broadly conic shell is milk-white and measures 3.5 mm. The whorls of the protoconch are deeply obliquely immersed, apparently smooth. The six whorls of the teleoconch are well rounded. They are marked with three strong, equal spiral keels, the posterior two of which are tuberculate, the third one smooth. The tubercles are connected axially by slender riblets, which extend to the third keel. There are about twenty tubercles on the latter whorls, while on the early whorls they are ill defined. The sutures are deeply channeled. The periphery of the body whorl is marked by a smooth spiral keel, equal to the one posterior to it. The base of the shell is moderately long, well rounded and marked by four spiral keels which grow successively weaker anteriorly. The aperture is irregularly ovate. The posterior angle is obtuse. The outer lip is thin, showing the external sculpture within. The columella is stout, provided with a strong fold at its insertion.[4]

Distribution

This species occurs in the Pacific Ocean off Lower California.

References
  1. Rosenberg, G. (2011). Odostomia hemphilli Dall & Bartsch, 1909. Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=575855 on 2011-11-10
  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. Keen M. (1971). Sea shells of Tropical West America. Marine mollusks from Baja California to Perú. (2nd edit.). Stanford University Press pp. 1064:
  4. William Healy Dall and Paul Bartsch , "A Monograph of West American Pyramidellid Mollusks" , Smithsonian Institution, 1909
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