Graciliclava costata

Graciliclava costata
Original image of a shell of Graciliclava costata
Scientific classification
Kingdom: Animalia
Phylum: Mollusca
Class: Gastropoda
Clade: Caenogastropoda
Clade: Hypsogastropoda
Clade: Neogastropoda
Superfamily: Conoidea
Family: Horaiclavidae
Genus: Graciliclava
Species: G. costata
Binomial name
Graciliclava costata
(Hedley, 1922)
Synonyms[1]
  • Austroclavus costatus. Cotton, B.C. 1947
  • Clavus costatus Hedley, 1922

Graciliclava costata is a species of sea snail, a marine gastropod mollusk in the family Horaiclavidae.

It was previously included within the family Turridae.[1]

Description

The length of the shell varies between 5 mm and 10 mm.

(Original description) The small, solid and compact shell has an ovate-elongate shape. Its colour is dull white, the summit buff-yellow, base anterior to the insertion of the lip pale orange-yellow. Along the suture are irregular chocolate splashes. The shell contains 7 whorls including a protoconch of two depressed whorls. Its sculpture consists of eight thick and prominent ribs to a whorl These descend the shell vertically and continuously; on the base they are slightly flexed, and each terminates anteriorly in a bead. Both ribs and interstices are engraved by very minute and dense spiral striae. The snout is traversed by a few coarse spirals, which cease at the bead row. On the smooth glossy protoconch is a pronounced median keel, which ends abruptly at the topmost rib. The aperture is pyriform and produced into a short, wide, open siphonal canal .Behind the lip is a prominent varix which, rising above the suture, fills an intervariceal space on the preceding whorl. A substantial callus sheet spreads on the inner lip, and a tubercle is formed near the right insertion. Just in front of the siphonal canal is a slight insinuation of the outer lip. [2]

Distribution

This marine species occurs off Queensland, Australia and the Philippines

References

  1. 1 2 Graciliclava costatus (Hedley, 1922).  Retrieved through: World Register of Marine Species on 4 April 2010.
  2. ↑ Hedley, C. 1922. A revision of the Australian Turridae. Records of the Australian Museum 13(6): 213-359, pls 42-56

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