Conus arenatus, common name the sand-dusted cone, is a species of sea snail, a marine gastropod mollusk in the family Conidae, the cone snails and their allies.

Like all species within the genus Conus, these snails are predatory and venomous. They are capable of "stinging" humans, therefore live ones should be handled carefully or not at all.

Conus betulinus is a species of sea snail, a marine gastropod mollusk in the family Conidae, the cone snails and their allies.