Abundant in the Solitary Islands Marine Park. In Australia recorded on the east coast from Torres Strait to eastern Victoria and including Lord Howe Island.
Frequents intertidal and shallow sub-tidal zones.
Shell solid with five spiral rows of nodules on body whorls. Outer lip thick, curved, with four teeth internally. Columella thickly calloused, smooth. External colour grey with black nodules; deep interior of aperture purple-grey, teeth white; outer lip cream or cream alternating with black or brown. Members of this family are carnivorous, feeding on worms and other hard shell molluscs by drilling a small circular hole in the shell of their prey. Grows to around 35 mm but usually less than 20 mm. Formerly known as Morula marginalba.
The Seashells of New South Wales, Des Beechey, Senior Fellow, Australian Museum, Release 25. Website at https://seashellsofnsw.org.au/Rapaninae/Pages/morula_marginalba.htm. Accessed 11/11/2018.