• Koinoporus mapochi Sánchez & Moretto, 1988
• Limnemertes poyangensis Gibson & Wang, 2002
• Prostoma albolineatum accepted as Tetrastemma albolineatum (Timofeeva, 1912)
• Prostoma ambigua accepted as Tetrastemma ambiguum Riches, 1893
• Prostoma ambiguum accepted as Tetrastemma ambiguum Riches, 1893
• Prostoma amphiporoides accepted as Tetrastemma amphiporoides Bürger, 1893
• Prostoma antarcticum accepted as Tetrastemma antarcticum Bürger, 1893
• Prostoma armata accepted as Emplectonema echinoderma (Marion, 1873)
• Prostoma armatum sensu Dugès, 1830
• Prostoma aseptata accepted as Tetrastemma aseptata (Friedrich, 1935)
• Prostoma assimile accepted as Tetrastemma assimile Örsted, 1844
• Prostoma baculus accepted as Tetrastemma baculus (Quatrefages, 1846)
• Prostoma beaumonti accepted as Tetrastemma beaumonti (Southern, 1913)
• Prostoma biancestro accepted as Tetrastemma candidum (Müller, 1774)
• Prostoma bioculatum accepted as Tetrastemma bioculatum Örsted, 1843
• Prostoma bipeltatum accepted as Tetrastemma bipeltatum (Timofeeva, 1912)
• Prostoma bistriatum accepted as Tetrastemma bistriatum (Timofeeva, 1912)
• Prostoma brunnea accepted as Tetrastemma brunnea (Friedrich, 1935)
• Prostoma buxeum accepted as Tetrastemma buxeum Bürger, 1895
• Prostoma canadiensis Gibson & Moore, 1978
• Prostoma candidum accepted as Tetrastemma candidum (Müller, 1774)
• Prostoma cassidens accepted as Tetrastemma cassidens (Fischer & Marenzeller, 1886)
• Prostoma cephalophorum accepted as Tetrastemma cephalophorum Bürger, 1895
• Prostoma cerasinum accepted as Tetrastemma cerasinum Bürger, 1895
• Prostoma cisalpinum Vialli, 1926
• Prostoma clepsinoides (Dugès, 1828) accepted as Prostoma puteale (Dugès, 1828)
• Prostoma communopore Senz, 1996
• Prostoma coronatum
• Prostoma cruciatum Bürger, 1895 accepted as Tetrastemma cruciatum Bürger, 1895
• Prostoma diadema accepted as Tetrastemma diadema Hubrecht, 1879
• Prostoma dubium accepted as Tetrastemma dubium Örsted, 1845
• Prostoma duboisi accepted as Tetrastemma duboisi Bürger, 1893
• Prostoma dutoiti accepted as Tetrastemma dutoiti (Wheeler, 1940)
• Prostoma eilhardi (Montgomery, 1894)
• Prostoma elegans accepted as Tetrastemma elegans (Girard, 1852)
• Prostoma falsum accepted as Tetrastemma falsum Bürger, 1895
• Prostoma flagellatum accepted as Tetrastemma vermiculus (Quatrefages, 1846)
• Prostoma flavidum accepted as Tetrastemma flavidum Ehrenberg, 1828
• Prostoma georgianum accepted as Tetrastemma georgianum Bürger, 1893
• Prostoma giardii Hallez, 1879
• Prostoma glanduliferum accepted as Tetrastemma glanduliferum Bürger, 1895
• Prostoma graecense (Böhmig, 1892)
• Prostoma graecensis (Böhmig, 1892)
• Prostoma graeffei accepted as Tetrastemma graeffei (Diesing, 1863)
• Prostoma gulliveri accepted as Oerstedia gulliveri (Bürger, 1893)
• Prostoma hansi accepted as Tetrastemma hansi Bürger, 1893
• Prostoma hermaphroditicum accepted as Tetrastemma hermaphroditica (Keferstein, 1868)
• Prostoma herouardi accepted as Tetrastemma herouardi (Oxner, 1908)
• Prostoma humile accepted as Tetrastemma humilis (Quatrefages, 1846)
• Prostoma incisum accepted as Tetrastemma incisum Stimpson, 1855
• Prostoma interruptum accepted as Tetrastemma interruptum Bürger, 1895
• Prostoma knochii accepted as Tetrastemma knochii (Kölliker, 1845)
• Prostoma lactiflorea accepted as Amphiporus lactifloreus (Johnston, 1828)
• Prostoma leonillae accepted as Tetrastemma leonillae (Oxner, 1908)
• Prostoma longissimum accepted as Tetrastemma longissimum Bürger, 1895
• Prostoma maculatum
• Prostoma marionis accepted as Tetrastemma marionis Joubin, 1890
• Prostoma melanocephala accepted as Tetrastemma melanocephalum (Johnston, 1837)
• Prostoma melanocephalum accepted as Tetrastemma melanocephalum (Johnston, 1837)
• Prostoma merula accepted as Tetrastemma merula (Corrêa, 1954)
• Prostoma mixtum accepted as Tetrastemma mixtum (Timofeeva, 1912)
• Prostoma nigrifrons accepted as Tetrastemma nigrifrons (Coe, 1904)
• Prostoma nimbatum accepted as Tetrastemma nimbatum Bürger, 1895
• Prostoma obscura accepted as Cyanophthalma obscura (Schultze, 1851)
• Prostoma obscurum (Schultze, 1851) accepted as Cyanophthalma obscura (Schultze, 1851)
• Prostoma peltatum accepted as Tetrastemma peltatum Bürger, 1895
• Prostoma portus accepted as Tetrastemma portus Bürger, 1895
• Prostoma pulchra accepted as Nipponnemertes pulcher (Johnston, 1837)
• Prostoma puteale (Dugès, 1828)
• Prostoma quadripunctata accepted as Nemertopsis quadripunctata (Quoy & Gaimard, 1833)
• Prostoma quadripunctatum accepted as Nemertopsis quadripunctata (Quoy & Gaimard, 1833)
• Prostoma quadristriatum accepted as Tetrastemma quadristriatum Grube, 1869
• Prostoma quatrefagesi accepted as Tetrastemma quatrefagesi (Bürger, 1904)
• Prostoma robertianae accepted as Tetrastemma robertianae McIntosh, 1874
• Prostoma roseocephalum accepted as Tetrastemma roseocephalum (Yamaoka, 1947)
• Prostoma rubrum (Leidy) accepted as Prostoma graecense (Böhmig, 1892)
• Prostoma schultzei accepted as Tetrastemma schultzei Czerniavsky, 1880
• Prostoma scutelliferum accepted as Tetrastemma scutelliferum Bürger, 1895
• Prostoma simplex accepted as Tetrastemma simplex (Timofeeva, 1912)
• Prostoma spectaculum accepted as Pantinonemertes spectacula (Yamaoka, 1940)
• Prostoma steenstrupii Hallez, 1879
• Prostoma stigmatum
• Prostoma subpellucidum accepted as Tetrastemma subpellucidum Ørsted, 1843
• Prostoma suhmi accepted as Tetrastemma suhmi (Bürger, 1904)
• Prostoma tutus accepted as Tetrastemma tutus (Monastero, 1930)
• Prostoma unicolor accepted as Tetrastemma unicolor (Hubrecht, 1879)
• Prostoma unilineatum accepted as Tetrastemma unilineatum Joubin, 1910
• Prostoma validum accepted as Antarctonemertes validum (Bürger, 1893)
• Prostoma vastum accepted as Tetrastemma vastum Bürger, 1895
• Prostoma vermicula accepted as Tetrastemma vermiculus (Quatrefages, 1846)
• Prostoma vermiculus accepted as Tetrastemma vermiculus (Quatrefages, 1846)
• Prostoma verrilli accepted as Tetrastemma verrilli (Bürger, 1904)
• Prostoma viera accepted as Tetrastemma viera (Timofeeva, 1912)
• Prostoma viperula accepted as Tetrastemma viperula (Timofeeva, 1912)
• Prostoma vitigerum accepted as Tetrastemma vittigerum (Bürger, 1904)
• Prostoma vittigerum accepted as Tetrastemma vittigerum (Bürger, 1904)
• Stichostemma amphiporoides accepted as Tetrastemma amphiporoides Bürger, 1893
• Stichostemma antarcticum accepted as Tetrastemma antarcticum Bürger, 1893
• Stichostemma duboisi accepted as Tetrastemma duboisi Bürger, 1893
• Stichostemma eilhardi Montgomery, 1894