Achatinella Elegans
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''Achatinella elegans'' is an extinct species of a land snail,
gastropod The gastropods (), commonly known as snails and slugs, belong to a large taxonomic class of invertebrates within the phylum Mollusca called Gastropoda (). This class comprises snails and slugs from saltwater, from freshwater, and from land. T ...
in the family Achatinellidae. It was endemic to Oahu.


Shell description

The dextral or sinistral shell is conically-elongate, solid, plano-convex and margined above with the suture well impressed. The shell has six
whorls A whorl ( or ) is an individual circle, oval, volution or equivalent in a whorled pattern, which consists of a spiral or multiple concentric objects (including circles, ovals and arcs). Whorls in nature File:Photograph and axial plane floral d ...
. The aperture is subovate and the white lip is expanded, unreflected, somewhat contracted in its center and thickened within. The short columella is flat and lightly toothed. The glossy shell color is alternating light and dark-brown, arranged in longitudinal lines or broad patches. Sometimes with a white sutural band and a white band on the
body whorl The body whorl is part of the morphology of the shell in those gastropod mollusks that possess a coiled shell. The term is also sometimes used in a similar way to describe the shell of a cephalopod mollusk. In gastropods In gastropods, the b ...
. The height of the shell is 23.1 mm. The width of the shell is 10.3 mm.


References

This article incorporates public domain text (a public domain
work of the United States Government A work of the United States government, is defined by the United States copyright law, as "a work prepared by an officer or employee of the United States Government as part of that person's official duties." "A 'work of the United States Governmen ...
) from reference. U.S. Fish and Wildlife Service. (1992) Recovery Plan for the O’ahu Tree Snails of the Genus ''Achatinella''. U.S. Fish and Wildlife Service, Portland, Oregon, 64 pp. + 64 pp. of appendices + 5 figures
PDF
/ref> {{Taxonbar, from=Q308886 †elegans Extinct gastropods Molluscs of Hawaii Endemic fauna of Hawaii Biota of Oahu Taxonomy articles created by Polbot ESA endangered species