Clavus obliquicostatusClavus obliquicostatus is a species of sea snail, a marine gastropod mollusk in the family Drilliidae.DescriptionThe length of the shell attains 33 mm. The longitudinal ribs are oblique, narrow, a little waved, and obtusely pointed on the periphery. A few revolve astride at the base of the body whorl. The shell is yellowish white, spotted and maculated with chestnut.DistributionThis marine species occurs off New Caledonia and Papua New Guinea