Amphipoda of the hydrothermal vents along the mid-Atlantic Ridge

During the FARA programme, hydrothermal sites were discovered and studied on the mid-Atlantic Ridge. Amphipods were collected during Alvin dives at two sites: Lucky Strike and Snake Pit. Four new species are described: Gitanopsis alvina, Bouvierella curtirama, Luckia striki and Steleuthera ecoprophycea, one of which requires the new genus Luckia. No Lysiannassoidea on Pardaliscidae have been collected at the Atlantic sites although together they represent more than 99% of collections made at vent localities in the East Pacific. This difference is discussed together with the different trophic groups characteristic of hydrothermal vents.