Iothia

The following species within the genus Iothia are recognised by the World Register of Marine Species :^[1]

• Iothia albescens (Philippi, 1846) (nomen dubium)
• Iothia emarginuloides (Philippi, 1868)
• Iothia fulva (O. F. Müller, 1776)
• Iothia lindbergi McLean, 1985
• Iothia megalodon Warén, Nakano & Sellanes, 2011

Species brought into synonymy

• Iothia antarctica (E. A. Smith, 1907): synonym of Iothia emarginuloides (Philippi, 1868)
• Iothia coppingeri (E. A. Smith, 1881): synonym of Iothia emarginuloides (Philippi, 1868)
• Iothia depressa (Hedley, 1916): synonym of Nacella polaris (Hombron & Jacquinot, 1841): synonym of Nacella concinna (Strebel, 1908)
• Iothia fulviformis (Egorova, 1972): synonym of Iothia emarginuloides (Philippi, 1868)
• Iothia pelseneeri (Thiele, 1912): synonym of Propilidium pelseneeri Thiele, 1912
• Iothia radiata (M. Sars, 1851): synonym of Piliscus commodus (Middendorff, 1851)

• Forbes, E. 1849. On the genera of British Patellacea. The Athenaeum 1145: 1018
• Gofas, S.; Le Renard, J.; Bouchet, P. (2001). Mollusca. in: Costello, M.J. et al. (eds), European Register of Marine Species: a check-list of the marine species in Europe and a bibliography of guides to their identification. Patrimoines Naturels. 50: 180-213
• Spencer, H.G., Marshall, B.A. & Willan, R.C. (2009). Checklist of New Zealand living Mollusca. Pp 196–219. in: Gordon, D.P. (ed.) New Zealand inventory of biodiversity. Volume one. Kingdom Animalia: Radiata, Lophotrochozoa, Deuterostomia. Canterbury University Press, Christchurch.