24 species of errant polychaetes have been recorded for the eastern Mexican continental shelf: Two Phyllodocidae, one Pilargidae, two Syllicdae, four Nereididae, two Glyceridae, two Goniadidae, three Nephtyidae, two Onuphidae, five Lumbrineridae y one Dorvilleidae. Two of these were the first to be recorded in Mexico, two from Mexican waters in the Gulf of Mexico and 11 new ones recorded in Tamaulipas.Se registran 24 especies de poliquetos errantes para la plataforma continental oriental mexicana: Dos Phyllodocidae, uno Pilargidae, dos Syllidae, cuatro Nereididae, dos Glyceridae, dos Goniadidae, tres Nephtyidae, dos Onuphidae, cinco Lumbrineridae y uno Dorvilleidae. De ellos, dos se registran por primera vez para México, dos para aguas mexicanas del Golfo de México y 11 son nuevos registros para Tamaulipas.