Trochidae – Umboniinae: Ethminolia probabilis Iredale, 1924 (‘May’s top-shell’)

Synonym(s): probabilis Iredale, 1924; mayi Kershaw, 1955.

Typical shell-length 10 mm. Very similar to E. vitiliginea, but umbilicus relatively broad. Lives subtidally amongst seaweed and seagrass. Native. Endemic to southeastern Australia (NSW, TAS and VIC). In Tasmanian waters, this is a rare species confined to the N coast and Bass Strait islands; most likely to be found towards the NE.