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Molluscs of Tasmania

Rissoidae: Onoba (Onoba) demessa (Tate & May, 1900) (‘mown rice-shell’)

Synonym(s): demessa Tate & May, 1900.
Typical shell-length 3.5 mm. Lives subtidally and offshore. Native. Endemic to southeastern Australia (TAS only).

Classification

Class: Gastropoda
Subclass: Caenogastropoda – Sorbeoconcha
Order: Hypsogastropoda – Littorinimorpha
Superfamily: Rissooidea
Family: Rissoidae
Genus: Onoba

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