Gadinalea conica

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Gadinalea conica
Scientific classification
Kingdom: Animalia
Phylum: Mollusca
Class: Gastropoda
Subclass: Orthogastropoda
Superorder: Heterobranchia
Order: Pulmonata
Family: Trimusculidae
Genus: Gadinalea
Species: G. conica
Binomial name
Gadinalea conica
(Angas, 1940)
Synonyms

Gadinia conica Angas, 1867
Gadinia nivea Hutton, 1878
Amalthea hexagona Suter, 1906
Hipponix hexagonus (Suter, 1913)
Gadinia nivea Suter, 1913
Hipponix hexagonus Powell, 1924

Gadinalea conica is a pulmonate gastropod mollusc of the family Trimusculidae, endemic to eastern and southern Australia, and New Zealand including the Chatham Islands.

The shell is normally broadly-ovate to near circular, thin, white, and multi-ribbed, the sharp low-profile apex just behind the middle. This species lives in colonies on the roofs of low caverns, at about low water mark, and crowding of individuals results in high-arched forms, attached to the backs of low-spread ones that are in direct contact with the rock. The siphonal canal is inconspicuous, and does not protrude at the margin.

  • Low form: Length is up to 26 mm, width 22.5 mm, and height 8 mm
  • High form: Length is up to 22 mm, width 18.5 mm, and height 15 mm.

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