GENUS CAECUM FLEMING 1813

TYPE SPECIES (SD: GRAY, 1847) DENTALIUM TRACHEA MONTAGU, 1803, NORTHEASTERN ATLANTIC.

Diagnosis — Shell minute; teleoconch tubular, slightly curved, smooth or crossed by axial ribs, longitudinal grooves, lines, cords, or a combination. Posterior end closed by conical septum.Protoconch planispirally coiled.