In this family, if the species delineation can be performed via the study of the shell morphology, the generic level requires imperatively molecular analysis (cf. Galindo, Puillandre, Utge, Lozouet & Bouchet at https://doi.org/10.1016/j.ympev.2016.03.019); this is the reason why species of extremely different appearances are grouped nowadays within a same genus. Shells small to medium-sized, with a heavy trend to develop an invasive columellar callus; aperture with at least the anterior siphonal canal; operculum horny, with a nucleus very anteriorly placed.