• Amphiporus (Intestinonemertes) arcticus (Punnett, 1901) accepted as Amphiporus arcticus Punnett, 1901
• Amphiporus angulatus (Müller, 1774)
• Amphiporus arcticus Punnett, 1901 (uncertain > taxon inquirendum)
• Amphiporus bicolor Bürger, 1895 (uncertain > taxon inquirendum)
• Amphiporus binarius Korotkevich, 1978 (unaccepted > nomen nudum)
• Amphiporus dissimulans Riches, 1893
• Amphiporus groenlandicus Örsted, 1843 (uncertain > nomen dubium)
• Amphiporus imparispinosus Griffin, 1898
• Amphiporus lactifloreus (Johnston, 1828)
• Amphiporus lancetoformis Korotkevich, 1978 (unaccepted > nomen nudum)
• Amphiporus macracanthus Coe, 1905
• Amphiporus murmanicum Ushakov, 1928
• Amphiporus murmanicus accepted as Amphiporus murmanicum Ushakov, 1928
• Amphiporus superbus (Girard in Stimpson, 1854)
• Arctostemma arcticum (Ushakov, 1926)
• Baseodiscus anocellatus Korotkevich, 1978 (unaccepted > nomen nudum)
• Carinina atavia (Bergendal, 1902)
• Carinina chupensis Korotkevich, 1982 (unaccepted > nomen nudum)
• Carinina wijnhoffae Kulikova, 1984
• Carinoma uschakovi Chernyshev, 1999
• Cephalothrix linearis (Rathke, 1799)
• Cerebratulus barentsi Bürger, 1895
• Cerebratulus borealis (Diesing, 1862) (uncertain > nomen dubium)
• Cerebratulus brevis Ushakov, 1926
• Cerebratulus fuscus (McIntosh, 1874)
• Cerebratulus impressus Stimpson, 1857 accepted as Micrura impressa (Stimpson, 1857)
• Cerebratulus longifissus Hubrecht, 1887 accepted as Heteronemertes longifissa (Hubrecht, 1887)
• Cerebratulus longifissus sensu Punnett, 1903 accepted as Heteronemertes longifissa (Hubrecht, 1887)
• Cerebratulus marginatus [Renier], [1804]
• Cerebratulus niveus (Punnett, 1903)
• Cerebratulus rigidus Isler, 1900
• Cerebratulus zachsi Ushakov, 1926 (uncertain > nomen dubium)
• Cryptonemertes actinophila (Bürger, 1904) accepted as Oerstedia actinophila (Bürger, 1904)
• Cyanophthalma cordiceps (Sars in Jensen, 1878) sensu Norenburg, 1986 accepted as Cyanophthalma vittata (Verrill, 1874)
• Cyanophthalma vittata (Verrill, 1874)
• Dinonemertes alberti (Joubin, 1906)
• Dinonemertes arctica Korotkevich, 1977
• Emplectonema derjugini Ushakov, 1928 accepted as Neesia derjugini (Ushakov, 1928)
• Emplectonema gracile (Johnston, 1837)
• Emplectonema neesii (Örsted, 1843) accepted as Neesia neesii (Örsted, 1843)
• Gurjanovella littoralis Ushakov, 1926
• Gurjanovella murmanica Ushakov, 1926
• Gurjanovella murmanicum Ushakov, 1926 accepted as Gurjanovella murmanica Ushakov, 1926
• Heteronemertes longifissa (Hubrecht, 1887)
• Lineus angulatus accepted as Lineus angulosus Korotkevich, 1978
• Lineus angulosus Korotkevich, 1978 (unaccepted > nomen nudum)
• Lineus atradentis Korotkevich, 1978 (unaccepted > nomen nudum)
• Lineus callaris Korotkevich, 1978 (unaccepted > nomen nudum)
• Lineus lancearius Korotkevich, 1978 (unaccepted > nomen nudum)
• Lineus levinensis Korotkevich, 1978 (unaccepted > nomen nudum)
• Lineus marisalbi Ushakov, 1926
• Lineus quadratus Korotkevich, 1978 (unaccepted > nomen nudum)
• Lineus ruber (Müller, 1774)
• Lineus sainthilairi Ushakov, 1926
• Lineus sanguineus (Rathke, 1799)
• Lineus schmidti Korotkevich, 1978 (unaccepted > nomen nudum)
• Lineus trilobulatus Korotkevich, 1978 (unaccepted > nomen nudum)
• Lineus viridis (Müller, 1774)
• Maculaura alaskensis (Coe, 1901)
• Malacobdella grossa (Müller, 1776)
• Micrura alaskensis Coe, 1901 accepted as Maculaura alaskensis (Coe, 1901)
• Micrura ancistroentis Korotkevich, 1978 (unaccepted > nomen nudum)
• Micrura fasciolata Ehrenberg, 1828
• Micrura impressa (Stimpson, 1857)
• Micrura lithotamnii Ushakov, 1928
• Micrura varicolor Punnett, 1903
• Nareda aberrans accepted as Tetrastemma aberrans Coe, 1901
• Nareda superba Girard in Stimpson, 1854 accepted as Amphiporus superbus (Girard in Stimpson, 1854)
• Neesia derjugini (Ushakov, 1928)
• Neesia neesii (Örsted, 1843)
• Nemertes fusca (Fabricius, 1780) accepted as Lineus ruber (Müller, 1774)
• Nipponnemertes pacifica (Coe, 1905)
• Nipponnemertes pulcher (Johnston, 1837) accepted as Nipponnemertes pulchra (Johnston, 1837)
• Nipponnemertes pulchra (Johnston, 1837)
• Oerstedia actinophila (Bürger, 1904)
• Oerstedia dorsalis (Abildgaard, 1806)
• Paranemertes peregrina Coe, 1901
• Procarinina atavia Bergendal, 1902 accepted as Carinina atavia (Bergendal, 1902)
• Quasitetrastemma bicolor (Coe, 1901) accepted as Tetrastemma bicolor Coe, 1901
• Ramphogordius sanguineus (Rathke, 1799) accepted as Lineus sanguineus (Rathke, 1799)
• Tetrastemma aberrans Coe, 1901
• Tetrastemma arctica Ushakov, 1926 accepted as Arctostemma arcticum (Ushakov, 1926)
• Tetrastemma arcticum Ushakov, 1926 accepted as Arctostemma arcticum (Ushakov, 1926)
• Tetrastemma bicolor Coe, 1901
• Tetrastemma candidum (Müller, 1774)
• Tetrastemma laminariae Ushakov, 1928
• Tetrastemma vermiculus (Quatrefages, 1846)
• Tubulanus annulatus (Montagu, 1804)
• Tubulanus capistratus (Coe, 1901)
• Uniporus borealis (Punnett, 1901)