Keywords: Harpa gracilis 001.jpg en Harpa gracilis Broderip G B Sowerby I 1829; family Harpidae 2016-02-28 15 00 39 https //commons wikimedia org/wiki/File Naturalis_Biodiversity_Center_-_ZMA MOLL 356215_-_Harpa_gracilis_Broderip_ 26_Sowerby _1829_-_Harpidae_-_Mollusc_shell jpeg Naturalis Biodiversity Center other versions Custom license marker 2016 02 28 Naturalis donation CC-0 Harpa gracilis Media donated by Naturalis Biodiversity Center Molluscs at Naturalis from the Zoölogisch Museum Amsterdam |