Baseodiscus Diesing, 1850 (additional source)
Baseodiscus delineatus (Delle Chiaje, 1822) (additional source)
Cerebratulidae Gibson, 1985 accepted as Lineidae McIntosh, 1874 (additional source)
Cerebratulus [Renier], [1804] (additional source)
Cerebratulus marginatus [Renier], [1804] (additional source)
Emplectonema gracile (Johnston, 1837) (additional source)
Emplectonematidae Bürger, 1904 (additional source)
Fasciola rubra Müller, 1774 accepted as Lineus ruber (Müller, 1774) (source of synonymy)
Gordius annulatus Montagu, 1804 accepted as Tubulanus annulatus (Montagu, 1804) (source of synonymy)
Hoplonemertini represented as Hoplonemertea (additional source)
Lineidae McIntosh, 1874 (additional source)
Lineus Sowerby, 1805 (additional source)
Lineus bilineatus (Renier, 1804) accepted as Siphonenteron bilineatum Renier in Menighini, 1847 (additional source)
Lineus gesserensis (O.F. Müller, 1774) (source of synonymy)
Lineus ruber (Müller, 1774) (additional source)
Meckelia Leuckart, 1828 accepted as Cerebratulus [Renier], [1804] (basis of record)
Monostilifera (additional source)
Nemertea incertae sedis (additional source)
Nemertes Cuvier, 1816 accepted as Lineus Sowerby, 1805 (basis of record)
Nemertes gracilis Johnston, 1837 accepted as Emplectonema gracile (Johnston, 1837) (source of synonymy)
Oerstedia Quatrefages, 1846 (additional source)
Oerstedia dorsalis (Abildgaard, 1806) (additional source)
Oxypolia Punnett, 1901 (additional source)
Oxypolia beaumontiana Punnett, 1901 (additional source)
Planaria Müller, 1776 (basis of record)
Planaria dorsalis Abildgaard, 1806 accepted as Oerstedia dorsalis (Abildgaard, 1806) (source of synonymy)
Polia Delle Chiaje, 1822 accepted as Baseodiscus Diesing, 1850 (basis of record)
Polia delineata Delle Chiaje, 1822 accepted as Baseodiscus delineatus (Delle Chiaje, 1822) (source of synonymy)
Poliopsis Joubin, 1890 (additional source)
Poliopsis lacazei Joubin, 1890 (additional source)
Siphonenteron bilineatum Renier in Menighini, 1847 (source of synonymy)
Tubulanidae Bürger, 1904 (1874) (additional source)
Tubulanus [Renier], [1804] (additional source)
Tubulanus annulatus (Montagu, 1804) (additional source)
Tubulanus polymorphus [Renier], [1804] (additional source)