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Seguenziidae: Calliobasis bilix (Hedley, 1905) (‘balanced top-shell’)
Synonym(s): bilix Hedley, 1905.
Typical shell-length 4.0 mm. Lives in offshore waters. Native. Endemic to southeastern Australia (NSW, TAS, VIC and SA).
Classification
Class: Gastropoda
Subclass: Vetigastropoda
Order: Vetigastropoda
Superfamily: Seguenzioidea
Family: Seguenziidae
Genus: Calliobasis
![species image](https://molluscsoftasmania.org.au/wp-content/uploads/2017/07/no_image.jpg)
![locality map](https://molluscsoftasmania.org.au/wp-content/uploads/2017/07/no-spatial-records.jpg)