Kingdom Animalia Class Gastropoda Family Pyramidellidae Rank Species | Phylum Mollusca Superfamily Pyramidelloidea Genus Odostomia | |
 | ||
Odostomia licina is a species of sea snail, a marine gastropod mollusk in the family Pyramidellidae, the pyrams and their allies.
Contents
Description
The pupiform shell is vitreous. The length of the shell reaches 3 mm. The whorls of the protoconch are large, obliquely immersed in the first of the succeeding turns, above which the tilted edge of the last volution only projects. The six whorls of the teleoconch are flattened, slightly excurved at the shouldered summit, strongly contracted at the sutures. They are marked by very strong, vertical axial ribs, of which 16 occur upon all the whorls. In addition to these ribs, the whorls are marked between the sutures by four moderately strong spiral cords, which render the junction with the ribs obscurely nodulous. The spaces enclosed between the ribs and cords are well impressed squarish pits. The sutures are strongly impressed. The periphery and the base of the body whorl are well rounded. They are marked by the feeble continuations of the axial ribs and twelve slender spiral cords which grow successively weaker from the periphery to the umbilical area. The oval aperture is elongate. The posterior angle is obtuse. The outer lip is thin, showing the external sculpture within. The columella is slender, decidedly curved, slightly reflected, reinforced by the base, and provided with a weak fold at its insertion. The parietal wall is covered with a thin callus.
Distribution
The type specimen of this marine species was found at Manuel Lagoon, Lower California.