Samples of the genera Famelica Bouchet & Warén, 1980 and Aliceia Dautzenberg & Fischer, 1897 (Conoidea, Raphitomidae) collected mainly by the MD55 expedition in the Vitória-Trindade Chain, Brazil, and secondarily by MAPEM Project, are studied. Famelica leucospira n. sp. is described for the populations from the Brazilian coast (Bahia to Rio de Janeiro), previously misidentified as F. mirmidina (Dautzenberg & Fischer, 1896). The broader spire, the carinated protoconch, the weak superior carina in the teleoconch whorls, the growth line as wide chevrons, and the inner lip lacking folds of the new species are the main characters that distinguish it from F. mirmidina. That species appears restricted to the North Atlantic. Famelica pukua n. sp. is also introduced by a specimen collected in Campos Basin, Rio de Janeiro, 902 m, characterized by extreme elongation of the shell, sculptured by uniform, low, spiral cords and c. 5 protoconch whorls. Aliceia aenigmatica Dautzenberg & Fischer, 1897 described for the region from Azores and Portugal, and with a reported occurrence off Rio de Janeiro, is here also reported to the Vitória-Trindade Chain, Brazil.
MD55 expedition, Brazil, Raphitomidae, Aliceia, Famelica, new species