Type species is the extant Oliva flammulata Lamarck, 1811. It is, however, a junior homonym of Strephona Gray, 1847. Species assigned to this genus-group taxon occuir in tropical West-African waters [Tropical Atlantic realm. Gulf of Guinea province]. Fossil species are recognised from as early as the Chattian (Upper Oligocene) of the Aquitaine Basin, France.