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Rissoidae: Onoba (Subestea) australiae (Frauenfeld, 1867) (‘Australian rice-shell’)
Synonym(s): australiae Frauenfeld, 1867 apicilirata Tate & May, 1900 mixta Tate, 1899 seminodosa May, 1916 ochroleuca Henn & Brazier, 1894.
Typical shell-length 2.4 mm. Lives subtidally and offshore amongst seaweed. Native. Endemic to southeastern Australia (NSW and TAS).
Classification
Class: Gastropoda
Subclass: Caenogastropoda – Sorbeoconcha
Order: Hypsogastropoda – Littorinimorpha
Superfamily: Rissooidea
Family: Rissoidae
Genus: Onoba
Localities for Onoba australiae
Ansons Bay
Bangor: Lagoon Bay
Bicheno: Governor Island
Clarke Island: Black Point
D’Entrecasteaux Channel (unlocalised)
Eaglehawk Neck: eastern side
Flinders Island: Palana Beach
Georges Bay: Blanche Point
Greens Beach: main beach
Mulcahy Bay
Narawntapu: Badger Head
New Harbour
Orford: Spring Beach
Pirates Bay: near landing
Port Arthur: Denmans Cove
Taroona Beach
![species image](https://molluscsoftasmania.org.au/wp-content/uploads/2017/09/Onoba-australiae.jpg)
![species image](https://molluscsoftasmania.org.au/wp-content/uploads/2017/09/Onoba-australiae_2.jpg)
![locality map](https://molluscsoftasmania.org.au/wp-content/uploads/2017/09/Onoba-australiae-1.jpg)