Melitid amphipods belonging to the Maera–Ceradocus-group are re-examined from the Atlantic coast using material from the collection in the Smithsonian Institution (Washington): Ruffomaera gen. nov. is established for Maera williamsi, furthermore Meximaera briani sp.nov., Maeropsis cf. perrieri and Ceradocus breweri (transferred from Gammarus) are described and illustrated.