Eulithidium bellumEulithidium bellum, common name the shouldered pheasant shell, is a species of sea snail, a marine gastropod mollusk in the family Phasianellidae.DescriptionTh height of the shell varies between 2 mm and 6 mm.DistributionThis species occurs in the Gulf of Mexico, the Caribbean Sea and the Lesser Antilles; in the Atlantic Ocean off Southern Brazil.