| Nominal Species (n = 101) | Present allocation (n = 94) | Ref. |
|---|---|---|
| Notomastus aberans Day, 1957 | Notomastus aberans | 1398 |
| Capitella aciculatus Hartman, 1959 | Capitella aciculatus | 7866 |
| Capitomastus aciculatus Hartman, 1959 | Capitomastus aciculatus | 19 |
| Scyphoproctus aciculatus Mohammad, 1980 | Scyphoproctus aciculatus | 2663 |
| Peresiella acuminatobranchiata Thomassin, 1970 | Peresiella acuminatobranchiata | 2663 |
| Leiochrides africanus Augener, 1918 | Leiochrides africanus | 75524 |
| Notomastus americanus Day, 1973 | Notomastus americanus | 7866 |
| Leiocapitellides analis Hartmann-Schröder, 1960 | Leiocapitellides analis | 2663 |
| Notomastus angelicae Hernández-Alcántara & Solís-Weiss, 1998 | Notomastus angelicae | 8159 |
| Pulliella armata Fauvel, 1929 | Scyphoproctus armatus | 19 |
| Leiochrides australis Augener, 1914 | Leiochrides australis | 2663 |
| Notomastus benedeni Claparède, 1864 | Notomastus latericeus | 3477 |
| Notomastus bermejoi Hernández-Alcántara, García-Garza & Solís-Weiss, 2022 | Notomastus bermejoi | 3477 |
| Heteromastides bifidus Augener, 1914 | Heteromastides bifidus | 7866 |
| Capitella blakei Magalhäes & Hilliard, 2022 | Capitella blakei | 3477 |
| Capitellethus branchiferus Gallardo, 1968 | Capitellethus branchiferus | 3477 |
| Mediomastus branchiferus Hartmann-Schröder, 1962 | Mediomastus branchiferus | 3477 |
| Neopseudocapitella brasiliensis Rullier & Amoreux, 1979 | Neopseudocapitella brasiliensis | 7866 |
| Mastobranchus braziliensis Da Silva & Amaral, 2022 | Mastobranchus braziliensis | 3477 |
| Dasymallus caducus Grube, 1846 | Dasybranchus caducus | 2663 |
| Mediomastus californiensis Hartman, 1944 | Mediomastus californiensis | 7866 |
| Amastigos caperatus Ewing & Dauer, 1981 | Amastigos caperatus | 3477 |
| Capitella capitata antarctica Monro, 1930 | Capitella capitata | 88727 |
| Lumbricus capitatus Fabricius, 1780 | Capitella capitata | 75097 |
| Capitella caribaeorum Warren & George, 1986 | Capitella caribaeorum | 7866 |
| Dasybranchus carneus Grube, 1870 | Dasybranchus carneus | 3477 |
| Mediomastus caudatus Hartman, 1974 | Mediomastus caudatus | 2663 |
| Notomastus cinctus Fauchald, 1972 | Notomastus cinctus | 8159 |
| Mediomastus cirripes Ben-Eliahu, 1976 | Mediomastus cirripes | 7866 |
| Abyssocapitella commensalis Buzhinskaja & Smirnov, 2000 | Abyssocapitella commensalis | 7851 |
| Arenia cruenta Quatrefages, 1866 | Notomastus latericeus | 3477 |
| Notodasus dasybranchoides Magalhães & Bailey-Brock, 2012 | Notodasus dasybranchoides | 3477 |
| Notomastus daueri Ewing, 1982 | Notomastus daueri | 7866 |
| Capitellides dispar Ehlers, 1907 | Capitellethus dispar | 2663 |
| Scyphoproctus djiboutiensis Gravier, 1906 | Scyphoproctus djiboutiensis | 19 |
| Mastobranchus dollfusi Fauvel, 1936 | Mastobranchus dollfusi | 19 |
| Scyphoproctus edmondsoni Magalhães & Bailey-Brock, 2012 | Scyphoproctus edmondsoni | 3477 |
| Notomastus fauveli Day, 1955 | Notomastus fauveli | 3477 |
| Notomastus fertilis Eisig, 1887 | Notomastus latericeus | 3477 |
| Capitella filiformis Claparède, 1864 | Heteromastus filiformis | 2663 |
| Notomastus formianus Eisig, 1887 | Notomastus formianus | 3477 |
| Arenia fragilis Quatrefages, 1866 | Notomastus latericeus | 3477 |
| Mediomastus fragilis Rasmussen, 1973 | Mediomastus fragilis | 7866 |
| Dasybranchus gajolae Eisig, 1887 | Dasybranchus gajolae | 19 |
| Capitella giardi Mesnil, 1897 | Capitella giardi | 7866 |
| Notomastus giganteus Moore, 1906 | Notomastus giganteus | 3477 |
| Leiocapitella glabra Hartman, 1947 | Leiocapitella glabra | 7866 |
| Dasybranchus glabrus Moore, 1909 | Dasybranchus glabrus | 8159 |
| Neonotomastus glabrus Fauchald, 1972 | Neonotomastus glabrus | 8159 |
| Decamastus gracilis Hartman, 1963 | Decamastus gracilis | 7866 |
| Eunotomastus grubei McIntosh, 1885 | Eunotomastus grubei | 19 |
| Scyphoproctus guadalupensis Gillet, 1987 | Scyphoproctus guadalupensis | 7866 |
| Heteromastus gusipoensis Jeong, Soh & Suh, 2019 | Heteromastus gusipoensis | 3477 |
| Leiochrides hemipodus Hartman, 1960 | Leiochrides hemipodus | 8159 |
| Notomastus hemipodus Hartman, 1945 | Notomastus hemipodus | 7866 |
| Capitella hermaphrodita Boletzky & Dolile, 1967 | Capitella hermaphrodita | 19 |
| Promastobranchus huloti Gallardo, 1968 | Promastobranchus huloti | 82601 |
| Heteromastus koreanus Jeong, Soh & Suh, 2019 | Heteromastus koreanus | 3477 |
| Notomastus latericeus Sars, 1851 | Notomastus latericeus | 3477 |
| Notomastus lineatus Claparède, 1870 | Notomastus lineatus | 7866 |
| Neoheteromastus lineus Hartman, 1960 | Neoheteromastus lineus | 8159 |
| Notomastus lobatus Hartman, 1947 | Notomastus lobatus | 7866 |
| Mastobranchus loii Gallardo, 1968 | Mastobranchus loii | 3477 |
| Dasybranchus lumbricoides Grube, 1878 | Dasybranchus lumbricoides | 19 |
| Dasybranchus lunulatus Ehlers, 1887 | Dasybranchus lunulatus | 7866 |
| Notomastus luridus Verrill, 1873 | Notomastus luridus | 7866 |
| Notodasus magnus Fauchald, 1972 | Notodasus magnus | 8159 |
| Notomastus magnus Hartman, 1947 | Notomastus magnus | 8159 |
| Peresiella megapapilata Da Silva & Amaral, 2022 | Peresiella megapapilata | 3477 |
| Capitella minima Langerhans, 1881 | Capitella minima | 2663 |
| Paraleiocapitella mossambica Thomassin, 1970 | Paraleiocapitella mossambica | 78039 |
| Notomastus mossambicus Thomassin, 1970 | Paraleiocapitella mossambica | 85340 |
| Capitella multibranchiata Magalhäes & Hilliard, 2022 | Capitella multibranchiata | 3477 |
| Heteromastus namhaensis Jeong, Soh & Suh, 2019 | Heteromastus namhaensis | 3477 |
| Decamastus nudus Thomassin, 1970 | Decamastus nudus | 7866 |
| Scyphoproctus oculatus Reish, 1959 | Scyphoproctus oculatus | 8159 |
| Promastobranchus orbiculatus Green, 2002 | Promastobranchus orbiculatus | 3477 |
| Capitella ovincola Hartman, 1947 | Capitella ovincola | 7866 |
| Dasybranchus parplatyceps Kudenov, 1975 | Dasybranchus parplatyceps | 8159 |
| Dasybranchus platyceps Hartman, 1947 | Dasybranchus platyceps | 8159 |
| Scyphoproctus platyproctus Jones, 1961 | Scyphoproctus platyproctus | 7866 |
| Notomastus polyodon Gallardo, 1968 | Notomastus polyodon | 3477 |
| Notomastus precocis Hartman, 1960 | Notomastus precocis | 8159 |
| Notomastus profundus Eisig, 1887 | Notomastus profundus | 19 |
| Polymastigos profundus Da Silva & Amaral, 2022 | Polymastigos profundus | 3477 |
| Capitella rubicunda Keferstein, 1862 | Notomastus latericeus | 3477 |
| Rashgua rubrocincta Wesenberg-Lund, 1949 | Notomastus rubrocinctus | 2663 |
| Leiocapitella sensibilis Da Silva & Amaral, 2020 | Leiocapitella sensibilis | 3477 |
| Mediomastus setosus Hartmann-Schröder, 1959 | Mediomastus setosus | 8159 |
| Heteromastus similis Southern, 1921 | Heteromastus similis | 2663 |
| Undecimastus sinaiticus Amoureux, 1983 | Undecimastus sinaiticus | 2663 |
| Branchiocapitella singularis Fauvel, 1932 | Branchiocapitella singularis | 8357 |
| Peresiella spathulata Ewing, 1984 | Peresiella spathulata | 7866 |
| Scyphoproctus steinitzii Day, 1965 | Scyphoproctus steinitzii | 2663 |
| Notomastus sunae Lin, García-Garza, Lyu & Wang, 2020 | Notomastus sunae | 3477 |
| Notomastus tenuis Moore, 1909 | Notomastus tenuis | 7866 |
| Parheteromastus tenuis Monro, 1937 | Parheteromastus tenuis | 3477 |
| Capitella teres Treadwell, 1939 | Capitella teres | 7866 |
| Mediomastus thomassini Warren, Hutchings & Doyle, 1994 | Mediomastus thomassini | 8357 |
| Mastobranchus variabilis Ewing, 1984 | Mastobranchus variabilis | 7866 |
| Mediomastus warrenae Green, 2002 | Mediomastus warrenae | 3477 |