Polystira antillarum

Polystira antillarum is a species of sea snail, a marine gastropod mollusk in the family Turridae, the turrids.

Description
(Description of Pleurotoma virgo) The shell is ridged and striated, the central ridge forming a carina. The shell is usually glossy white, but when covered by its epidermis corneous.

Distribution
This marine species occurs in the West Indies (Guadeloupe).