The first record of shorttail lanternshark Etmopterus brachyurus Smith & Radcliffe, 1912, in the eastern Pacific is communicated on the basis of one specimen, male, 520 mm TL (MNHNC P. 7247), captured in waters to the west of Desventuradas Islands, Chile. Morphometric data of the specimen in comparison with those of the holotype description are provided.
