Dentalium Linnaeus, 1758

Diagnosis

Shell medium to large, generally well curved, strong, usually polished. Variable in color (white to yellow, orange, red or green). Eight to 12 primary ribs, varying strength, simple­channeled. Secondary ribs variable in number, smooth or sculptured. Intercostal spaces concave or convex, smooth or sculptured by longitudinal or transversal striae, or both. Apex with a flat V­shaped notch at ventral side. Apical callous, lumen circular, pipe common. Section polygonal at apex, circular at mouth.