Shells small to large, oval-oblong to circular in outline, conical, with a more or less anteriorly placed slit or foramen, dedicated to the exhalant siphon. Outside more or less rough, radially and concentrically sculptured, with, in some species, an additional adornment made up of scales; inside porcellaneous; often, the main sculpture is reflected, attenuated, internally; muscular impression open anteriorly.
 

Shell small to medium-sized, variable in height, with an apex slightly anterior; orifice immediately anterior to it, with a more or less accentuated 8-shaped contour and provided, internally, with a callus, truncated posteriorly, or even excavated; sculpture made of conspicuous radial ribs crosssed by concentric threads or laminae. Aperture entire; margin subplanar to arcuate-concave, strongly crenulated. Muscle impression obsolete, with both anterior branches slightly incurved.
 

Shell very small to small, thin, ovate, gibbous, often elevated, with a curved apex placed slightly posteriorly the summit; surface cancellated; aperture emarginated anteriorly by a slit for the exhalant siphon; selenizone present between slit and apex; margins and inside smooth, glossy; muscle impression hardly visible.
 

Shell small to large, conical, close to the Diodora but often more flattened, with a sculpture in which the radials are always more marked than the commarginals; apex anterior, corresponding to the summit, and pierced by a more or less 8-shaped foramen; aperture subplanar to slightly arcuate. Inside glossy; presence of a weak callus around the foramen; muscle impression obsolete.
 

Shell minute to very small, « height low to moderate; all slopes flat-sided. Apical whorl lacking, protoconch retained in young shells until shell length of 2mm; protoconch sculpture rugose. Foramen apical, obliterating protoconch in mature shell, of weakly tripartite outline. Selenizone lacking. Septum relatively small, straight across, thin, low. Sculpture of raised pustules aligned in radial rows. » – McLean & Geiger: “New Genera ans Species having the Fissurisepta Shell Form, with a Generic-Level Phylogenetic Analysis (Gastropoda: Fissurellidae)”, Contributions in Science vol.475, Los Angeles 1998, p.15.
 

Shell very small to medium-sized, « height moderate; anterior slope broadly convex; apical whorl overhanging posterior slope; posterior slope concave; protoconch with linear and concentric sculpture; foramen on anterior slope of shell, position in earlier growth stages marked by strong selenizone. Anterior slope in advance of foramen not marked by doubled anterior rib. Foramen bordered posteriorly on inner surface by low, curved septum. Sculpture radial and concentric, radial sculpture marked by primary and secondary ribs. » – McLean & Geiger: op. cit. p.5.
 

« Testa oblonga, dorso convexa, apice postice deflexo, superficie cancellata sulco mediano antice in fissuram desinente instructa. Apertura ampla, septo interno plano semilunari ad partem posticam instructa; margine crenulato, antice valde fissurato. […]The internal septum distinguishes it from all the other Fissurellidæ. » – A. Adams: “On some new genera and species of Mollusca from Japan”, Annals and Magazine of Natural History vol. 3(5), London 1860, p.301.