Juliidae – Bertheliniinae: Berthelinia typica (Gatliff & Gabriel, 1911) (‘typical sea-slug’)

Synonym(s): typica Gatliff & Gabriel, 1911.

Typical body-length 5.0 mm. Lives intertidally amongst seaweed, specifically Caulerpa brownii, on which it feeds. Native. Endemic to southeastern Australia (TAS, VIC and SA).