Nacella

Nacella is a southern, cold-water genus of true limpets, marine gastropod molluscs in the family Nacellidae, the true limpets.

These limpets are found in the littoral zone and sublittoral zone of Antarctic and sub-Antarctic waters including (Tierra del Fuego, Macquarie Island, Kerguelen Island, and Heard and McDonald Islands). The grayish-brown shell is suboval and flattened and the ribbing on the shell is rather flat. The shiny interior of the shell is rust-colored or chocolate-brown.

Species
Species within the genus Nacella include:
 * Nacella clypeater R. P. Lesson, 1831 - Chilean copper limpet
 * Nacella concinna Strebel, 1908
 * Nacella deaurata J. F. Gmelin, 1791 - Patagonian copper limpet
 * Nacella delesserti Philippi, 1849
 * Nacella edgari Powell, 1957
 * Nacella flammea Gmelin, 1791
 * Nacella kerguelenensis (E. A. Smith, 1877)
 * Nacella macquariensis Finlay, 1927
 * Nacella magellanica J. F. Gmelin, 1791 - Magellanic copper limpet
 * Nacella mytilina Helbling, 1779
 * Nacella terroris (Filhol, 1880)
 * Nacella yaghana sp. nov. González-Wevar & Nakano, 2019


 * Species brought into synonymy:
 * † Nacella baylei Cossmann, 1882 : synonym of † Acroreia baylei (Cossmann, 1882) (new combination)
 * Nacella cernica H. Adams, 1869 : synonym of Cellana livescens (Reeve, 1855)
 * Nacella chiloensis ( Reeve, 1855) : synonym of Nacella magellanica (Gmelin, 1791)
 * Nacella compressa Verco, 1906 : synonym of Naccula compressa (Verco, 1906)
 * Nacella compressa Mabille & Rochebrune, 1889 : synonym of Nacella mytilina (Helbling, 1779)
 * Nacella crebristriata Verco, 1904 : synonym of Asteracmea crebristriata (Verco, 1904)
 * Nacella delicatissima Strebel, 1907 : represents particular morphotypes of Nacella deaurata (Gmelin, 1791)
 * Nacella falklandica Preston, 1913 : synonym of Nacella mytilina (Helbling, 1779)
 * Nacella flexuosa Hutton, 1873 : synonym of Cellana radians (Gmelin, 1791)
 * Nacella fuegiensis L. A. Reeve, 1855 - Tierra del Fuego limpet: synonym of Nacella deaurata (Gmelin, 1791)
 * Nacella mytiloides Schumacher, 1817 : synonym of Nacella mytilina (Helbling, 1779)
 * Nacella parva Angas, 1876 : synonym of Naccula parva (Angas, 1876)
 * Nacella peltoides Carpenter, 1864 : synonym of Williamia peltoides (Carpenter, 1864)
 * Nacella polaris (Hombron & Jacquinot, 1841) : synonym of Nacella concinna (Strebel, 1908)
 * Nacella stowae Verco, 1906 : synonym of Asteracmea stowae (Verco, 1906)
 * Nacella strigatella Rochebrune & Mabille, 1885 : synonym of Nacella deaurata (Gmelin, 1791)
 * Nacella subspiralis Carpenter, 1864 : synonym of Williamia subspiralis (Carpenter, 1864)
 * Nacella tasmanica Tate & May, 1900 : synonym of Propilidium tasmanicum (Pilsbry, 1895) (junior synonym)
 * Nacella venosa (Reeve, 1855) : synonym of Nacella magellanica (Gmelin, 1791)