TRAPEZIIDAE
coralliophaga, Coralliophaga (Gmelin, 1791)
obesa, Glossocardia (Reeve, 1843)
oblongum, Trapezium (Linné, 1758)
sublaevigatum, Trapezium (Lamarck, 1819)
References
Cernohorsky, Walter O. 1972. Marine Shells of the Pacific. Vol II. p. 232.