18. Marcia opima (Gmelin, 1791)

1788. Venus pinguis Schroeter, Nomen. Register, 10: 112.

Material examined: 1 valve

Measurements: Length: 1.7cm, Height: 1.5cm

Distribution: Andhra Pradesh, Andaman and Nicobar Islands, Karnataka, Orissa, Pondicherry, Tamil Nadu.

Remarks: The species is one of the commonly found species of the area and estuarine in its habitat.