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Tudivasum rasilistoma (Abbott, 1959)

Description: Shell solid, heavy. Whorls weakly spirally ribbed, with a single row of nodules at the periphery; 7-8 nodules per whorl, sometimes developed into short spines. Spiral row of spines on base of body whorl, originating at the centre of the aperture. Columellar callus heavy, inner lip of aperture produced beyond columella. Columella with 2 or 3 plaits centrally, deep within the aperture. Outer lip weakly crenulate, weakly lirate within. Colour fawn with dark brown on peripheral nodules and lower third of anterior canal; marked with a variable number of spiral white bands, but usually two on the periphery and two on the anterior canal. Operculum corneous, tear-drop shaped.

Size: Up to 83 mm in length.

Distribution: Endemic to Australia; Fraser Is, Qld, to Tweed Heads, NSW.

Habitat: Subtidal, down to 73 m. Uncommon.

Figs. 1,2: Off Fraser Island, Queensland (C.081260)



Copyright Des Beechey 2000