Odostomia tropidita

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

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

Salassia carinata De Folin, 1872 [1]

Description

The white shell has a pupiform shape. Its length measures 2.5 mm. The 1½ whorls of the protoconch form a moderately elevated helicoid spire, whose axis is at right angles to that of the succeeding turns, in the first of which it is about one-third immersed. The seven whorls of the teleoconch are moderately rounded, somewhat contracted at the sutures, and strongly tabulated on the summits. They are marked by rounded, weak, axial ribs of which eight occur upon the first and second, ten upon the third, twelve upon the fourth and fifth, and fourteen upon the penultimate turn. The intercostal spaces are broad and shallow. The periphery of the body whorl and base are well rounded. They are marked by the continuation of the ribs. The aperture is broadly oval. The outer lip is thin. The columella is slender and slightly curved.[4]

Distribution

The type species was found off the Isle of Pearls, Bay of Panama.

References
  1. De Folin, Fonds de la Mer, vol. 2, 1872, p. 168, pi. 6, fig. 6
  2. WoRMS (2011). Odostomia tropidita Dall & Bartsch, 1909. Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=575921 on 2012-01-12
  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. Dall & Bartsch, A Monograph of West American Pyramidellid Mollusks, United States National Museum Bulletin 68, 1p. 134; 1909
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