507. Periploma ovatum d´Orbigny, 1846

Bathymetric distribution: 0–15 m —SW.

Geographical distribution: Brazil (CE, SP) to Patagonia—WGD.

References: Vaz (1972), Rios (1994, 2009), Huber (2010a), Barroso et al. (2013a).

Family Thraciidae Stoliczka, 1870 (1839) (4 species)

Remarks: Thracia morrisoni Petit, 1964 is referred from Brazil by the CTFB (2024) but this information could not be tracked both from the literature or museum collections.