Baseodiscus pellucidus (Kennel, 1891) (source of synonymy)
Carcinonemertes carcinophila (Kölliker, 1845) (source of synonymy)
Carinella aragoi Joubin, 1890 accepted as Tubulanus annulatus (Montagu, 1804) (source of synonymy)
Cerebratulus depressus Quatrefages, 1846 (status source)
Cerebratulus spraguei Girard, 1893 accepted as Cerebratulus marginatus [Renier], [1804] (source of synonymy)
Lineus ruber (Müller, 1774) (source of synonymy)
Meckelia borealis Diesing, 1862 accepted as Cerebratulus borealis (Diesing, 1862) (new combination reference)
Oerstedia nigra (Riches, 1893) (additional source)
Polia filum Quatrefages, 1846 accepted as Cephalothrix rufifrons (Johnston, 1837) (source of synonymy)
Valencinia ornata Quatrefages, 1846 accepted as Tubulanus superbus (Kölliker, 1845) (source of synonymy)