Shells small to medium-sized, biconical, smooth or with a radial sculpture; aperture narrow; outer lip thickened adapically; posterior siphonal notch narrow; anterior siphonal canal small, open; columella arcuate, deflected anteriorly. Operculum smaller than the aperture.
 

Shell small, high-spired, with inflated whorls; suture deep; sculpture of radial costae crossed by spiral ribs, giving some species a cancellate appearance; often, the radials vanish abapically; aperture smooth inside, subovate, rounded posteriorly, a little pinched anteriorly; siphonal canal short, open.
 

« Shell ovately-fusiform ; spire elevated, whorls longitudinally ribbed; aperture narrow; columella straight; outer lip somewhat rectilinear, crenate internally. » – H. & A. Adams: The genera of Recent Mollusca; arranged according to their organization vol.1, London 1858, p.184. Operculum « elongated, unguiform, nucleus terminal, having close analogies with Pisania. » – R. Tate: Appendix to the Manual of the Mollusca of S.P. Woodward, A.L.S, London 1868, p.13.
 

Shell small, with a short spire; last whorl thickened on the shoulder. Aperture sinuous; outer lip serrated, thick near the posterior siphonal notch, curved on itself in median part, thin anteriorly; siphonal canal obsolete; columella toothed anteriorly, smooth above.
 

Shell small, « gradually turriculate; aperture elongated, narrow and posteriorly acuminate to the right; the peritreme is inflected externally, and furnished on the right and left of the interior with small teeth or shallow folds. » – A. Risso: Histoire naturelle… vol.4, Paris 1826, p.248.
 

« They are small, mitriform, plicate species, with a narrow-linear aperture, and with the last whorl contracted at the fore part. » – A. Adams: “On some new genera and species of Mollusca from Japan”, Annals and Magazine of Natural History ser.3 vol.6, London 1860, p.331.