Cyclope pellucida, common name : the cyclops nassa, is a species of sea snail, a marine gastropod mollusk in the family Nassariidae, the Nassa mud snails or dog whelks.Even as Cyclope has been ruled to have a feminine gender by Opinion 793 of the ICZN, Risso published the name as masculine Cyclope pellucidus and the synonym Cyclope donovania as feminine.