Murchisonellidae: Koloonella turrita (Petterd, 1884) (‘turret murchisonellid’)

Synonym(s): turrita Petterd, 1884.
Typical shell-length 3.0 mm. Lives subtidally as an ectoparasite of other invertebrates. Native. Endemic to southeastern and southwestern Australia (NSW, TAS, VIC, SA and WA).