Odostomia calliope

Odostomia calliope
	Apertural view of Odostomia calliope
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Gastropoda
Family:	Pyramidellidae
Genus:	Odostomia
Species:	O. calliope
Binomial name
	Odostomia calliope; Bartsch, 1912
Synonyms
	Evalea calliope Bartsch, 1912; Odostomia (Evalea) calliope Bartsch, 1912;

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

Description

The elongate-ovate shell is turreted, narrowly umbilicated, and creamy-white. The nuclear whorls are small, obliquely immersed in the first of the succeeding turns, above which only the tilted edge of the last volution projects. The five post-nuclear whorls are rather high between the sutures, shouldered at the summit, almost flattened below the shoulder. The spaces between the shoulders and the sutures appear as cylindrical elements. The whorls are marked by rather strong, incremental lines and by numerous strong, wavy, incised, spiral striations. The periphery and the moderately long base of the body whorl are well rounded, marked like the spire. The oval aperture is large. The posterior angle is decidedly obtuse. The outer lip is thin. The inner lip is moderately strong, oblique, somewhat sinuous, slightly reflected, and provided with a fold some little distance anterior to its insertion. The parietal wall is glazed with a moderately thick callus.^[3]

Distribution

This species occurs in the Pacific Ocean off California.

References

^ Rosenberg, Gary (2 October 2011). "Odostomia calliope Bartsch, 1912". WoRMS - World Register of Marine Species. Retrieved 2019-06-15.
^ 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.
^ Bartsch, Paul (1912). "Additions to the west American pyramidellid mollusk fauna, with descriptions of new species". Proceedings of the United States National Museum. 42 (1903): 261–289. doi:10.5479/si.00963801.42-1903.261.

[WoRMS-1] Rosenberg, Gary (2 October 2011). "Odostomia calliope Bartsch, 1912". WoRMS - World Register of Marine Species. Retrieved 2019-06-15.

[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] Bartsch, Paul (1912). "Additions to the west American pyramidellid mollusk fauna, with descriptions of new species". Proceedings of the United States National Museum. 42 (1903): 261–289. doi:10.5479/si.00963801.42-1903.261.

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