Oliva amethystinaOliva amethystina is a species of sea snail, a marine gastropod mollusk in the family Olividae, the olives.;Subspecies:Oliva amethystina amethystina Oliva amethystina guttata Lamarck, 1811DescriptionShell size 35 mm.DistributionThis marine species occurs off Philippines, Papua New Guinea, and off Queensland, Australia.