Rissoidae: Onoba (Subestea) supracostata (May, 1919) (‘ribbed rice-shell’)
Synonym(s): supracostata May, 1919.
Typical shell-length 1.7 mm. Lives subtidally and offshore. Native. Endemic to southeastern Australia (TAS and VIC).
Classification
Class: Gastropoda
Subclass: Caenogastropoda – Sorbeoconcha
Order: Hypsogastropoda – Littorinimorpha
Superfamily: Rissooidea
Family: Rissoidae
Genus: Onoba