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species

Hydroginella vitiensis F. Boyer, A. Wakefield & T. McCleery, 2003

kingdom Animalia - animals »  phylum Mollusca - mollusks »  class Gastropoda - gastropods »  order Neogastropoda »  family Marginellidae - Margin Shells »  genus Hydroginella

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Hydroginella vitiensis

Author: Boyer F., Wakefield A. & McCleery T.

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Description

Shell biconic, subpyriform, weakly shouldered, length : width ratio c. 50 %. Paucispiral protoconch, spire nipple-shaped, smooth sided, elevated, comprising 25% of total shell length. Sutures smooth. Aperture accounting for 3/4 total shell length, narrow, flaring slightly anteriorly, Labrum slightly convex externally, receeding shouldered, faintly sinuous internally with 30 weak denticles, extremely weak in middle 1/3, inner border showing a vertical straight lateral profile centrally. Margin strongly recurved, thickened, extending posteriorly to suture of body whorl, anteriorly around base of shell to meet first two plications. Parietal border convex, weak parietal callus ridge only evident from level of third plication to midbody. 3 sinusoidal, rather oblique columellar plications, third not quite as strong as first two. Shell pale cream colour, glossy.

Remarks. This species is known from 4 lots. Three lots were dredged respectively south, east and north off Viti Levu on the west side of the Fiji Archipelago, in the lower coral reef levels and upper bathyal; a fourth lot comes from the eastern part of the archipelago (Vanua Balavu, Lau Islands, upper bathyal). This species shows as much variable by its size as well as by its general outline.
Etymology. Named after the main island of the Fiji Archipelago.
Boyer F., Wakefield A. & McCleery T. 2003. The genus Hydroginella (Caenogastropoda: Marginellidae) at bathyal levels from the Fiji Islands
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 Hydroginella vitiensis Boyer, Wakefield & McCleery, 2003]
Data retrieved on: 22 November 2013

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