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Molluscs of Tasmania

Eulimidae: Hypermastus coxi (Pilsbry, 1899) (‘Cox’s urchin-snail’)

Synonym(s): coxi Pilsbry, 1899.

Typical shell-length 4.0 mm. Sexually dimorphic. Lives subtidally and offshore as an internal parasite of sand-dollars. Native. Endemic to southeastern Australia (NSW, TAS and VIC). In Tasmanian waters, this is a common species in the N; rare or absent to the S.


Class: Gastropoda
Subclass: Caenogastropoda – Sorbeoconcha
Order: Hypsogastropoda – Littorinimorpha
Superfamily: Eulimoidea
Family: Eulimidae
Genus: Hypermastus

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