Ranellidae – Ranellinae: Argobuccinum pustulosum (Lightfoot, 1786) (‘flag triton’)

Synonym(s): pustulosum Lightfoot, 1786 tumidum Dunker, 1862.

Typical shell-length 80 mm. Periostracum often persists. Lives subtidally and offshore amongst rocks and seaweed, especially in exposed environments. Native. Occurs in southeastern Australia (NSW, TAS, VIC and SA); also New Zealand, South Africa and southern South America. In Tasmanian waters, this is a widespread species, but commoner as a beached shell in the S.