Acteocina smirna

Acteocina smirna is a species of small sea snail, a marine opisthobranch gastropod mollusk in the family Acteocinidae, the barrel bubble snails.[1]

Acteocina smirna
Scientific classification
Kingdom:
Animalia
Phylum:
Mollusca
Class:
Gastropoda
(unranked):
clade Heterobranchia
clade Euthyneura
clade Euopisthobranchia
clade Cephalaspidea
Superfamily:
Bulloidea
Family:
Acteocinidae
Genus:
Acteocina
Species:
A. smirna
Binomial name
Acteocina smirna
Dall, 1919

Description

The length of the shell attains 4 mm, its diameter 2 mm..

The minute shell is white, with a yellowish periostracum. It contains about four whorls with a very minute subglobular hardly projecting glossy nucleus. The summit of the spire with the whorl is but little raised, flattish but not excavated between the suture and the bluntly rounded shoulder. The shell in front of the shoulder is subcylindrical, with fine axial incremental lines. The aperture is narrow. The outer lip is thin, nearly straight, rounding in front into the rather wide, slightly excavated columella which near the body carries a single strong plait. The body shows a thin coat of enamel, the umbilical region slightly impressed but imperforate.[2]

Distribution

This marine species occurs from Southern California to Panama

    References
    1. Rosenberg, G. (2015). Acteocina smirna Dall, 1919. In: MolluscaBase (2015). Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=575020 on 2016-07-10
    2. United States National Museum, and William Healey Dall. Descriptions of new species of Mollusca from the North Pacific Ocean in the collection of the United States National Museum. 1919
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