Litiopidae: Litiopa limnophysa Melvill & Standen, 1896 (‘bladdersnail litiopa’)
Synonym(s): limnophysa Melvill & Standen, 1896.
Typical shell-length 2.0 mm. Lives afloat amongst floating Sargassum and pumice. Native. Occurs in Eastern Australia (QLD, NSW and TAS); also elsewhere in the SW Pacific Ocean. In Tasmania this species is so far only recorded from Flinders Island.
Subclass: Caenogastropoda – Sorbeoconcha
Order: Cerithiimorpha – Cerithiimorpha