Volvarina evanida

Volvarina evanida, common name the alabaster marginella. is a species of sea snail, a marine gastropod mollusk in the family Marginellidae, the margin snails.

Description
The small, white shell is elongate and has an oval shape. The spire is short. The outer lip is thick and incrassate. It is bent inwards so as to narrow the aperture. The last two of the four plaits on the columella are close together and tumid.