Conus cedonulli 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 aurantius Hwass in Bruguière, 1792 * Conus insularis Gmelin, 1791 : considered by Vink to be a synonym of Conus aurantius Hwass in Bruguière, 1792 * Conus mappa sensu Lightfoot, 1786 * Conus sanctaemarthae spec. nov. : now synonym of Conus mappa sensu Lightfoot, 1786