V. irus.
V. exotica.
V. distans.
V. crenata.
V. carditoides.
V. perforans. The perforating Venerirupis.
Sub-rhombic, transversely striated, wrinkled on the anterior side; exterior brown, interior white, sometimes tinged with purple.
V. irus. The foliated Venerirupis. Pl. [7], fig. 2.
Species longitudinally striated; cardinal teeth two, sometimes three on the right and three on the left.