Subfamily PERVICACIINAE Rudman, 1969 (Fig. 3)

Type genus: Pervicacia Iredale, 1924 (= Duplicaria Dall, 1908)

Shell: Elongate, 10–100 mm, with high spire, predominant axial sculpture, wide aperture.

Anatomy: Rhynchodeal introvert rather small; salivary glands and radular sac present; radula of solid curved marginal teeth attached to strong membrane. Venom gland, proboscis and accessory proboscis structure absent.