Abstract

Seventy-one bivalve species, including fifteen new species living in the waters of Easter and Salas y Gómez Islands are herein described: Nuculana (s.l.) anakena sp. nov., Lasaea eastera sp. nov., Borniola pasca sp. nov., Hyalokellia tahaia sp. nov., Tellimya pauciradiata sp. nov., Tellimya tahaia sp. nov., Thecodonta rainesi sp. nov., Acrosterigma triangulare sp. nov., Herouvalia rapanui sp. nov., Moerella laperousea sp. nov., Abranda lamprelli sp. nov., Timoclea keegani sp. nov., Hyphantosoma crassum sp. nov., Hyphantosoma tenue sp. nov. and Austroneaera eastera sp. nov. Illustrated for the first time is the type material of Tindaria salaria Dall, 1908. Results of this study also revise previously accepted levels of endemicity as well as species affiliation with other biogeographical areas.