Alcyna lucidaAlcyna lucida, a species of sea snail, a marine gastropod mollusk in the family Trochidae.DescriptionThe rather solid, imperforate. subpellucid shell is white, with subdistant spiral riblets, and very minute longitudinal striae. The five, convex whorls show an impressed suture. The columellar tooth and external varix are strong.DistributionThis species occurs in the Indian Ocean off Mauritius.