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