Clavus bilineatusClavus bilineatus is a species of sea snail, a marine gastropod mollusk in the family Drilliidae.DescriptionThe size of an adult shell varies between 12 mm and 24 mm. G.W. Tryon thought this species to be a synonym of Clavus pulchella . He stated that the differences were only in the tuberculations being less sharp and the color not so bright, with a brownish tinge.DistributionThis species occurs in the Indo-West Pacific, off the Philippines and Taiwan, and also off Papua New Guinea and Australia.