Lunella coronata

[1] The shell grows to a length of 4 cm, with conspicuous flattened, cup-like scales interspersed by small, regular rows of nodules.

The colour of the shell is pale to greenish, flecked with purplish-brown markings (often encrusted with light pink coralline algae).

The wide columella is flattened and excavated, deflexed recurved and somewhat channelled at its base, The inside of the operculum is flat, greenish and golden, iridescent, with about 5–6 whorls and a subcentral nucleus.

The passage from the strongly tuberculate forms into those in which the transverse striae simply cut the lirae into diamonds or granules is made by imperceptible degrees.

This marine species occurs in the Red Sea, off Southeast Africa, the Mascarene Basin and in the Indo-Pacific.

Closed eye of Lunella coronata ; ep = epidermis; vm = vitreous mass