Four new records of gymnosome pteropods (Pteropoda, Gymnosomata) in the Campeche Canyon, southern Gulf of Mexico

This study reports four new records of gymnosome pteropods (Pteropoda, Gymnosomata): Pneumodermopsis macrochira Meisenheimer, 1905, Spongiobranchaea intermedia Pruvot-Fol, 1926, Schizobrachium cf. polycotylum Meisenheimer, 1903, and Cliopsis krohnii Troschel, 1854, collected at different depths in the Campeche Canyon, southern Gulf of Mexico, during the winter storm season in 2011 (“Nortes”). These species are illustrated and described, increasing the knowledge of this group in the region. We also present hydrographic conditions of the stations and depths where the organisms were collected.