Acirsa subcarinata

Taxobox
name = "Acirsa subcarinata"
regnum = Animalia
phylum = Mollusca
classis = Gastropoda
subclassis = Prosobranchia
ordo = Heterogastropoda
familia = Epitoniidae
genus = Acirsa
species = "A. subcarinata"
binomial = "Acirsa subcarinata"
binomial_authority = (Murdoch & Suter,1906)
synonyms =

"Acirsa subcarinata" is a species of minute deeper water sea snail or micromollusk. It is a wentletrap in the family Epitoniidae, a marine prosobranch gastropod mollusk.

Distribution

"Acirsa subcarinata" is endemic to islands off the north east coast of the North Island of New Zealand. This species is found around the Hen and Chicken Islands and Great Barrier Island, at depths of between 45 and 200 m.

hell description

The shell is minute, white, with a very tall narrow spire of strongly convex whorls. The surface is smooth apart from very weak irregular axial growth folds, and several distant faint spirals, the uppermost of which defines a very slight shoulder. The aperture is ovate. The peristome is thin-edged, effuse below, and free-edged from below the parietal wall, partly covering a narrow crescentic umbilicus.

The shell height is up to 2.9 mm, and the width 1 mm.

References

* Powell A W B, "New Zealand Mollusca", William Collins Publishers Ltd, Auckland, New Zealand 1979 ISBN 0-00-216906-1