Alvania eucraspeda
Alvania eucraspeda is a species of small sea snail, a marine gastropod mollusk or micromollusk in the family Rissoidae.
The Australian Faunal Directory considers Rissoa hulliana var. eucraspeda a synonym of ''Alvania fasciata''
Description
The length of the shell attains 2 mm, its diameter 1.5 mm.This deep-sea variety differs from the typical shore form by being pure white, slightly larger and comparatively broader, and by having fewer and more prominent radials. Thus it acquires a lip broader and more scalloped, approaching a varix.