van Heesvelde 2010. Range extension of the lessepsian Cypraeidae Purpuradusta gracilis (Gaskoin, 1849) and Erronea caurica (Linnaeus, 1758), with description of a new subspecies of Purpuradusta gracilis (Mollusca: Gastropoda: Cypraeidae). Visaya, 3(1), August 2010: 4-15