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Taxon profile

species

Euryentmema australiana Shuto, 1983

kingdom Animalia - animals »  phylum Mollusca - mollusks »  class Gastropoda - gastropods »  order Neogastropoda »  family Mangeliidae »  genus Euryentmema

Scientific synonyms

Euryentmena australiana (misspelling) m

Images

Euryentmema australiana

Author: Jan Delsing

Taxon in country check-lists*

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Description

Shell minute, biconically fusiform. Protoconch paucispiral, large, globose and superficially smooth, but microgranular under microscope. Boundary defined by a sharp ridge. Teleoconch-whorls on spire convex, biangulate, and separated from one another by undulating impressed sutures. Body whorl large occupying more than 70 percent of whole height. Base remarkably contracted. Sculpture of coarse cancellation of axials and spirals. Axials from suture to suture, sharply elevated and slightly sigmoidally curved. Spirals strong and cross over axials forming granules at crossings. Aperture pyriform with widely open, terminally truncated canal. Anal sinus very shallow occupying whole shoulder slope. Axials are reversed sigmoid and to merge to the upper suture with prosoclinal upper part. Prosoclinal part is more inclined on earlier whorls. Axials are strong and raised below the upper angulation and become thin but equally erect above it. Primary spirals are three on the first whorl, of which the uppermost one is suggested by a spirally oriented granules on axials and the lowest one is half covered by the succeeding whorl. Secondary spiral appears first on the lowest interspace, then does successively on the upper interspaces. One on the shoulder slope is very weak between the axials but peculiarly bulged on the axials. On the body whorl axials become gradually weak on the basal slope and almost disappear at the contraction between basal slope and snout, but their continuation on the long and vertical snout is suggested by raws of microgranules on spiral lirae. Spirals on the basal slope are weaker than those on lateral surface and snout. Callus of the inner lip is remarkably wide but not thick. Details of labrum is not known because of partial fracture. Probably no varix.
Shuto, 1983. Original description.

Distribution

Australia. New South Wales.
Author: Jan Delsing

Links and literature

EN Galli C.: WMSDB - Wolrdwide Mollusc Species Data Base July 10, 2013 [http://www.bagniliggia.it/WMSD/WMSDhome....] [as Euryentmena australiana Shuto, 1983]
Data retrieved on: 22 November 2013

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Explanations

m misspelling