• Acrostomum canescens (Leuckart, 1849) accepted as Amphiporus canescens (Leuckart, 1849)
• Acrostomum stannii (Grube, 1840) accepted as Valdivianemertes stannii (Grube, 1840) accepted as Akrostomum stannii Grube, 1840
• Akrostomum canescens (Leukart, 1849) accepted as Amphiporus canescens (Leuckart, 1849)
• Akrostomum stannii Grube, 1840
• Akrostomum valdiviae (Bürger, 1909)
• Collarenemertes bimaculata (Coe, 1901) sensu Chernyshev, 1993 accepted as Nipponnemertes neonilae Hookabe, Kajihara & Chernyshev, 2022
• Cratenemertes amboinensis (Bürger, 1890)
• Cratenemertes bergendali (Gering, 1912) accepted as Nipponnemertes pulcher (Johnston, 1837) accepted as Nipponnemertes pulchra (Johnston, 1837)
• Cratenemertes danae Friedrich, 1957 accepted as Nipponnemertes pulcher (Johnston, 1837) accepted as Nipponnemertes pulchra (Johnston, 1837)
• Cratenemertes madagascarensis Kirsteuer, 1965 accepted as Nipponnemertes madagascarensis (Kirsteuer, 1965)
• Cratenemertes pacificus accepted as Nipponnemertes pacifica (Coe, 1905)
• Cratenemertes pelagicus Korotkevich, 1961 accepted as Korotkevitschia pelagica (Korotkevich, 1961)
• Cratenemertes punctatulus accepted as Nipponnemertes punctatula (Coe, 1905)
• Cratenemertes variabilis Korotkevich, 1983 accepted as Nipponnemertes variabilis (Korotkevich, 1983)
• Duosnemertes marmorata (Bürger, 1895) (accepted > unreplaced junior homonym)
• Duosnemertes marmoratus (Hubrecht, 1879) accepted as Amphiporus marmoratus Hubrecht, 1879
• Nipponnemertes africana (Wheeler, 1940)
• Nipponnemertes africanus (Wheeler, 1940) accepted as Nipponnemertes africana (Wheeler, 1940)
• Nipponnemertes arenaria (Ushakov, 1927)
• Nipponnemertes arenarius accepted as Nipponnemertes arenaria (Ushakov, 1927)
• Nipponnemertes bergendali (Gering, 1912) accepted as Amphiporus bergendali Gering, 1912 accepted as Nipponnemertes pulcher (Johnston, 1837) accepted as Nipponnemertes pulchra (Johnston, 1837)
• Nipponnemertes bimaculata (Coe, 1901)
• Nipponnemertes bimaculata sensu Iwata, 1954 (uncertain > taxon inquirendum)
• Nipponnemertes bimaculatus Iwata, 1954 accepted as Nipponnemertes neonilae Hookabe, Kajihara & Chernyshev, 2022
• Nipponnemertes crypta Hookabe, Kajihara & Chernyshev, 2022
• Nipponnemertes danae (Friedrich, 1957)
• Nipponnemertes drepanophoroides (Griffin, 1898)
• Nipponnemertes fernaldi Iwata, 2001
• Nipponnemertes franciscae Alfaya, Chernyshev, Lozada & Bigatti, 2025
• Nipponnemertes ganahai Hookabe, Kajihara & Chernyshev, 2022
• Nipponnemertes incainca Gonzalez-Cueto, Castro & Quiroga, 2017
• Nipponnemertes jambio Hookabe, Kajihara & Chernyshev, 2022
• Nipponnemertes kozaensis Hookabe, Kajihara & Chernyshev, 2022
• Nipponnemertes lactea Hookabe, Kajihara & Chernyshev, 2022
• Nipponnemertes madagascarensis (Kirsteuer, 1965)
• Nipponnemertes magna (Punnett, 1903)
• Nipponnemertes magnus (Punnett, 1903) accepted as Nipponnemertes magna (Punnett, 1903)
• Nipponnemertes marioni (Hubrecht, 1887)
• Nipponnemertes neonilae Hookabe, Kajihara & Chernyshev, 2022
• Nipponnemertes notoensis Hookabe, Kajihara & Chernyshev, 2022
• Nipponnemertes occidentalis (Coe, 1905)
• Nipponnemertes ogumai (Yamaoka, 1947)
• Nipponnemertes ojimaorum Hookabe, Kajihara & Chernyshev, 2022
• Nipponnemertes ornata Hookabe, Kajihara & Chernyshev, 2022
• Nipponnemertes pacifica (Coe, 1905)
• Nipponnemertes pulcher (Johnston, 1837) accepted as Nipponnemertes pulchra (Johnston, 1837)
• Nipponnemertes pulchra (Johnston, 1837)
• Nipponnemertes punctatula (Coe, 1905)
• Nipponnemertes rubella Coe, 1905
• Nipponnemertes sanguinea Riser, 1998
• Nipponnemertes schollaerti (Wheeler, 1934)
• Nipponnemertes scoresbyi accepted as Achoronemertes scoresbyi (Wheeler, 1934)
• Nipponnemertes sugashimaensis Hookabe, Kajihara & Chernyshev, 2022
• Nipponnemertes variabilis (Korotkevich, 1983)
• Valdivianemertes stannii (Grube, 1840) accepted as Akrostomum stannii Grube, 1840
• Valdivianemertes valdiviae (Bürger, 1909) accepted as Akrostomum valdiviae (Bürger, 1909)