Purpurellus gambiensisPurpurellus gambiensis, common name : the Gambia Murex, is a species of sea snail, a marine gastropod mollusk in the family Muricidae, the murex snails or rock snails.DescriptionThe size of an adult shell varies between 35 mm and 75 mm.DistributionThis species is distributed in the Atlantic Ocean along Senegal, Guinea and Angola.