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Rissoinidae: Rissoina (Rissoina) gertrudis Tenison-Woods, 1876 (‘Gertrude’s rice-shell’)
Synonym(s): gertrudis Tenison-Woods, 1876.
Typical shell-length 4.5 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: Rissoinidae
Genus: Rissoina
![species image](https://molluscsoftasmania.org.au/wp-content/uploads/2017/09/RIssoina-gertrudis.jpg)
![locality map](https://molluscsoftasmania.org.au/wp-content/uploads/2017/09/Rissoina-gertrudis-1.jpg)