Lienardia rigidaLienardia rigida is a species of sea snail, a marine gastropod mollusk in the family Clathurellidae.DescriptionThe size of an adult shell varies between 6.3 mm and 8 mm. The color of the shell is fulvous. The shoulder undulates at the angle by the longitudinal ribs, which are crossed by raised striae.DistributionThis species occurs in the Pacific Ocean off Baja California, Panama and the Galapagos Islands.