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Wairarapa duplaris facts for kids

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Wairarapa duplaris
Wairarapa duplaris 001.jpg
Original image of a shell of Wairarapa duplaris
Scientific classification
  • Crassispira (Crassispira) duplaris (Hedley, 1922)
  • Melatoma duplaris Hedley, 1922 (original combination)

Wairarapa duplaris is a species of sea snail, a marine gastropod mollusk in the family Drilliidae.


The length of the shell attains 8 mm, its diameter 3 mm.

(Original description) The small, solid shell has a lanceolate shape. Its colour is dull cream, with a faint dorsal zone of brown. It contains 8 whorls, including a two-whorled protoconch. The radial sculpture is smooth and consists of round-backed perpendicular ribs truncated by a smooth and constricted fasciole, amounting to eleven on the penultimate whorl. On the earlier part of the body whorl these ribs are smaller and closer together than previously. Half a whorl behind the aperture is a rough varix, beyond which the ribs cease. The spiral sculpture on the base shows about a dozen fine grooves. Between the suture and the fasciole is a spiral ridge which tends to break up into beads opposite the ribs. The aperture is narrow. The sinus is C-shaped. A thick callus knob occurs at the right insertion.


This marine species is endemic to Australia and occurs off Queensland.

  • Wells, F.E. 1990. Revision of the recent Australian Turridae referred to the genera Splendrillia and Austrodrillia. Journal of the Malacological Society of Australasia 11: 73–117
  • Wilson, B. 1994. Australian Marine Shells. Prosobranch Gastropods. Kallaroo, WA : Odyssey Publishing Vol. 2 370 pp.
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