Paedophlax verugera – synonym of Exogone verugera
Paedophlax verugera Claparède, 1868 – synonym of Exogone verugera
Paedophylax hebes – synonym of Exogone hebes
Paedophylax hebes Webster & Benedict, 1884 – synonym of Exogone hebes
Paleanotus debilis Chambers & Muir, 1997 – synonym of Paleaonotus debilis
Palmyra debilis – synonym of Paleaonotus debilis
Palmyra debilis Grube, 1855 – synonym of Paleaonotus debilis
Palmyra evelinae – synonym of Paleaonotus debilis
Palmyra evelinae Claparède, 1864 – synonym of Paleaonotus debilis
Palmyra portus veneris – synonym of Paleaonotus debilis
Palmyra portus veneris Claparède, 1864 – synonym of Paleaonotus debilis
Panthalis oerstedi Kinberg, 1855 – synonym of Panthalis oerstedi
Paradexiospira vitrea Knight-Jones & Knight-Jones, 1977 – synonym of Paradexiospira vitrea
Paradiopatra fiordica Paxton, 1986 – synonym of Paradiopatra fiordica
Paradiopatra quadricuspis Paxton, 1986 – synonym of Paradiopatra quadricuspis
Paradoneis armata – synonym of Cirrophorus armatus
Paradoneis armata – synonym of Cirrophorus eliasoni
Paradoneis armata (non Glémarec) Hartley, 1981 – synonym of Cirrophorus eliasoni
Paradoneis armata Glémarec, 1966 – synonym of Cirrophorus armatus
Paradoneis eliasoni – synonym of Cirrophorus eliasoni
Paradoneis eliasoni Mackie, 1991 – synonym of Cirrophorus eliasoni
Paradoneis lyra – synonym of Cirrophorus lyra
Paradoneis lyra Mackie, 1991 – synonym of Cirrophorus lyra
Paramphinome jeffreysii Hartmann-Schröder, 1971 – synonym of Paramphinome jeffreysii
Paramphinome pulchella – synonym of Paramphinome jeffreysii
Paramphinome pulchella Sars, 1869 – synonym of Paramphinome jeffreysii
Paramphinome sp. – synonym of Trochochaeta multisetosa
Paramphinome sp. Tauber, 1879 – synonym of Trochochaeta multisetosa
Paramphitrite tetrabranchia Holthe, 1976 – synonym of Paramphitrite tetrabranchia
Paranaitis jeffreysii – synonym of Phyllodoce longipes
Paranaitis jeffreysii Southern, 1914 – synonym of Phyllodoce longipes
Paranaitis kosteriensis Bergstrom, 1914 – synonym of Paranaitis kosteriensis
Paranaitis wahlbergi Uschakov, 1972 – synonym of Paranaitis wahlbergi
Paranerilla limicola Jouin & Swedmark, 1965 – synonym of Paranerilla limicola
Paraonis fulgens Fauvel, 1927 – synonym of Paraonis fulgens
Paraonis gracilis – synonym of Levinsenia gracilis
Paraonis gracilis Eliason, 1920 – synonym of Levinsenia gracilis
Paraonis lyra – synonym of Cirrophorus armatus
Paraonis lyra – synonym of Cirrophorus eliasoni
Paraonis lyra – synonym of Cirrophorus lyra
Paraonis lyra (non Southern) Eliason, 1920 – synonym of Cirrophorus eliasoni
Paraonis lyra (non Southern) Hartmann-Schröder, 1971 – synonym of Cirrophorus armatus
Paraonis lyra Southern, 1914 – synonym of Cirrophorus lyra
Parapodrilus psammophilus Westheide, 1965 – synonym of Parapodrilus psammophilus
Pareurythoe borealia – synonym of Pareurythoe borealis
Pareurythoe borealia Hartmann-Schröder, 1996 – synonym of Pareurythoe borealis
Pareurythoe borealis Hartmann-Schröder, 1985 – synonym of Pareurythoe borealis
Parmenis ljungmani – synonym of Malmgrenia ljungmani
Parmenis ljungmani Malmgren, 1867 – synonym of Malmgrenia ljungmani
Parophryotrocha isochaeta Hartmann-Schröder, 1971 – synonym of Parophryotrocha isochaeta
Parougia eliasoni Wolf, 1986 – synonym of Parougia eliasoni
Parthenope serrata – synonym of Ctenodrilus serratus
Parthenope serrata Schmidt, 1857 – synonym of Ctenodrilus serratus
Pectinaria auricoma Hessle, 1917 – synonym of Pectinaria auricoma
Pectinaria Belgica Malmgren, 1866 – synonym of Pectinaria belgica
Pectinaria granulata Hessle, 1917 – synonym of Pectinaria granulata
Pectinaria hyperborea Hessle, 1917 – synonym of Pectinaria hyperborea
Pectinaria koreni Hessle, 1917 – synonym of Pectinaria koreni
Pectinaria pusilla – synonym of Petta pusilla
Pectinaria pusilla Wollebaek, 1912 – synonym of Petta pusilla
Perinereis cultrifera Fauvel, 1923 – synonym of Perinereis cultrifera
Petaloproctus borealis Imajima & Shiraki, 1982 – synonym of Petaloproctus borealis
Petaloproctus tenuis borealis – synonym of Petaloproctus borealis
Petaloproctus tenuis borealis Hartmann-Schröder, 1971 – synonym of Petaloproctus borealis
Petaloproctus tenuis var. borealis – synonym of Petaloproctus borealis
Petaloproctus tenuis var. borealis Arwidsson, 1906 – synonym of Petaloproctus borealis
Petta pusilla Malmgren, 1866 – synonym of Petta pusilla
Pherusa falcata Støp-Bowitz, 1948 – synonym of Pherusa falcata
Pherusa flabellata Støp-Bowitz, 1948 – synonym of Pherusa flabellata
Pherusa plumosa Støp-Bowitz, 1948 – synonym of Pherusa plumosa
Pholoe cf. anoculata – synonym of Pholoe pallida
Pholoe cf. anoculata Christie, 1982 – synonym of Pholoe pallida
Pholoe inornata – synonym of Pholoe synophthalmica
Pholoe inornata Chambers, 1985 part – synonym of Pholoe synophthalmica
Pholoe inornata Johnston, 1839 – synonym of Pholoe inornata
Pholoe minuta – synonym of Pholoe inornata
Pholoe minuta – synonym of Pholoe synophthalmica
Pholoe minuta McIntosh, 1900 part – synonym of Pholoe inornata
Pholoe minuta McIntosh, 1990 part – synonym of Pholoe synophthalmica
Pholoe pallida Chambers, 1985 – synonym of Pholoe pallida
Pholoe synophthalmica Claparède, 1868 – synonym of Pholoe synophthalmica
Pholoe synophthalmica Fauvel, 1923 part – synonym of Pholoe synophthalmica
Pholoe synophthalmica var. dinardensis – synonym of Pholoe synophthalmica
Pholoe synophthalmica var. dinardensis Saint-Joseph, 1888 – synonym of Pholoe synophthalmica
Pholoe tuberculata – synonym of Pholoe inornata
Pholoe tuberculata Southern, 1914 – synonym of Pholoe inornata
Phyllochaetopterus major Claparède, 1868 – synonym of Phyllochaetopterus major
Phyllodoce arctica – synonym of Phyllodoce groenlandica
Phyllodoce arctica Hansen, 1880 – synonym of Phyllodoce groenlandica
Phyllodoce badia – synonym of Phyllodoce citrina
Phyllodoce badia Malmgren, 1867 – synonym of Phyllodoce citrina
Phyllodoce bilineata – synonym of Eulalia bilineata
Phyllodoce bilineata Johnston, 1840 – synonym of Eulalia bilineata
Phyllodoce bimaculata – synonym of Phyllodoce laminosa
Phyllodoce bimaculata Saint-Joseph, 1898 – synonym of Phyllodoce laminosa
Phyllodoce callirhynchus – synonym of Phyllodoce lineata
Phyllodoce callirhynchus Michaelsen, 1896 – synonym of Phyllodoce lineata
Phyllodoce citrina Malmgren, 1865 – synonym of Phyllodoce citrina
Phyllodoce clavigera – synonym of Eulalia clavigera
Phyllodoce clavigera Audouin & Milne-Edwards, 1834 – synonym of Eulalia clavigera
Phyllodoce foliosa – synonym of Notophyllum foliosum
Phyllodoce foliosa M. Sars, 1835 – synonym of Notophyllum foliosum
Phyllodoce groenlandica Oersted, 1843 – synonym of Phyllodoce groenlandica
Phyllodoce kosteriensis – synonym of Paranaitis kosteriensis
Phyllodoce kosteriensis Fauvel, 1923 – synonym of Paranaitis kosteriensis
Phyllodoce laminosa Savigny, 1818 – synonym of Phyllodoce laminosa
Phyllodoce lineata Fauvel, 1923 – synonym of Phyllodoce lineata
Phyllodoce longipes Kinberg, 1866 – synonym of Phyllodoce longipes
Phyllodoce luetkeni – synonym of Phyllodoce groenlandica
Phyllodoce luetkeni Malmgren, 1967 – synonym of Phyllodoce groenlandica
Phyllodoce macropapillosa – synonym of Phyllodoce longipes
Phyllodoce macropapillosa Saint-Joseph, 1894 – synonym of Phyllodoce longipes
Phyllodoce maculata McIntosh, 1908 – synonym of Phyllodoce maculata
Phyllodoce mucosa Oersted, 1843 – synonym of Phyllodoce mucosa
Phyllodoce papulosa – synonym of Phyllodoce lineata
Phyllodoce papulosa Saint-Joseph, 1898 – synonym of Phyllodoce lineata
Phyllodoce pulchella – synonym of Phyllodoce maculata
Phyllodoce pulchella Malmgren, 1867 – synonym of Phyllodoce maculata
Phyllodoce pulchella Michaelsen, 1896 – synonym of Phyllodoce maculata
Phyllodoce punctifera – synonym of Pirakia punctifera
Phyllodoce punctifera Grube, 1860 – synonym of Pirakia punctifera
Phyllodoce rinki – synonym of Phyllodoce maculata
Phyllodoce rinki Malmgren, 1865 – synonym of Phyllodoce maculata
Phyllodoce rosea Pleijel, 1988 – synonym of Phyllodoce rosea
Phyllodoce teres – synonym of Phyllodoce maculata
Phyllodoce teres Malmgren, 1865 – synonym of Phyllodoce maculata
Phyllodoce viridis – synonym of Eulalia clavigera
Phyllodoce viridis Johnston, 1840 – synonym of Eulalia clavigera
Phylo kupfferi – synonym of Orbinia kupfferi
Phylo kupfferi Kirkegaard, 1996 – synonym of Orbinia kupfferi
Phylo norvegica – synonym of Orbinia norvegica
Phylo norvegica Støp-Bowitz, 1948 – synonym of Orbinia norvegica
Pileolaria granulata – synonym of Jugaria granulata
Pileolaria granulata Knight-Jones & Knight-Jones, 1977 – synonym of Jugaria granulata
Pionosyllis compacta Malmgren, 1867 – synonym of Pionosyllis compacta
Pionosyllis lamelligera Saint-Joseph, 1887 – synonym of Pionosyllis lamelligera
Pionosyllis pulligera Fauvel, 1923 – synonym of Pionosyllis pulligera
Pionosyllis serrata Southern, 1914 – synonym of Pionosyllis serrata
Pirakia punctifera Bergström, 1914 – synonym of Pirakia punctifera
Pisione germanica – synonym of Pisione remota
Pisione germanica Augener, 1924 – synonym of Pisione remota
Pisione remota Stecher, 1968 – synonym of Pisione remota
Pista cristata Hessle, 1917 – synonym of Pista cristata
Pista cristata occidentalis – synonym of Eupolymnia nebulosa
Pista cristata occidentalis Nordgaard, 1907 – synonym of Eupolymnia nebulosa
Pistella lornensis Hartmann-Schröder, 1996 – synonym of Pistella lornensis
Placostegus tridentatus McIntosh, 1923 – synonym of Placostegus tridentatus
Platynereis dumerilii Fauvel, 1923 – synonym of Platynereis dumerilii
Platynereis massiliensis Southward, 1956 – synonym of Platynereis massiliensis
Podarke aberrans – synonym of Microphthalmus aberrans
Podarke aberrans Webster & Benedict, 1887 – synonym of Microphthalmus aberrans
Podarkeopsis helgolandica Pleijel, 1993 – synonym of Podarkeopsis helgolandica
Poecilochaetus serpens Allen, 1904 – synonym of Poecilochaetus serpens
Polybostrichus mülleri – synonym of Autolytus prolifer
Polybostrichus mülleri Keferstein, 1862 – synonym of Autolytus prolifer
Polycirrus arcticus Sars, 1865 – synonym of Polycirrus arcticus
Polycirrus aurantiacus Grube, 1860 – synonym of Polycirrus aurantiacus
Polycirrus caliendrum Claparède, 1868 – synonym of Polycirrus caliendrum
Polycirrus latidens Eliason, 1962 – synonym of Polycirrus latidens
Polycirrus medusa Grube, 1850 – synonym of Polycirrus medusa
Polycirrus norvegicus Wollebaek, 1912 – synonym of Polycirrus norvegicus
Polycirrus plumosus Hessle, 1917 – synonym of Polycirrus plumosus
Polycirrus tribullata – synonym of Hauchiella tribullata
Polycirrus tribullata McIntosh, 1869 – synonym of Hauchiella tribullata
Polycirrus trilobatus – synonym of Amaeana trilobata
Polycirrus trilobatus Sars, 1863 – synonym of Amaeana trilobata
Polydora antennata Claparède, 1868 – synonym of Polydora antennata
Polydora antennata var. pulchra – synonym of Polydora pulchra
Polydora antennata var. pulchra Carazzi, 1895 – synonym of Polydora pulchra
Polydora caeca Söderström, 1920 – synonym of Polydora caeca
Polydora caulleryi Mesnil, 1897 – synonym of Polydora caulleryi
Polydora ciliata limicola Annenkova, 1934 – synonym of Polydora limicola
Polydora ciliata Söderström, 1920 – synonym of Polydora ciliata
Polydora cornuta Bosc, 1802 – synonym of Polydora cornuta
Polydora flava Claparède, 1870 – synonym of Polydora flava
Polydora giardi Mesnil, 1896 – synonym of Polydora giardi
Polydora hermaphroditica Hannerz, 1956 – synonym of Polydora hermaphroditica
Polydora hoplura Claparède, 1870 – synonym of Polydora hoplura
Polydora ligerica Hartmann-Schröder, 1996 – synonym of Polydora ligerica
Polydora ligni – synonym of Polydora cornuta
Polydora ligni Webster, 1879 – synonym of Polydora cornuta
Polydora paucibranchiata Okuda, 1937 – synonym of Polydora paucibranchiata
Polydora pulchra Eliason, 1962 – synonym of Polydora pulchra
Polydora pusilla – synonym of Polydora flava
Polydora pusilla Saint-Joseph, 1894 – synonym of Polydora flava
Polydora quadrilobata Jacobi, 1883 – synonym of Polydora quadrilobata
Polydora redeki – synonym of Polydora ligerica
Polydora redeki Horst, 1920 – synonym of Polydora ligerica
Polydora saint-josephi – synonym of Polydora caeca
Polydora saint-josephi Eliason 1920 – synonym of Polydora caeca
Polydora socialis Blake, 1969 – synonym of Polydora socialis
Polydra quadrilobata – synonym of Polydora caulleryi
Polydra quadrilobata Söderström, 1920 part. – synonym of Polydora caulleryi
Polygordius appendiculatus Fraipont, 1887 – synonym of Polygordius appendiculatus
Polygordius lacteus Schneider, 1868 – synonym of Polygordius lacteus
Polygordius purpureus – synonym of Protodrilus purpureus
Polygordius purpureus Schneider, 1868 – synonym of Protodrilus purpureus
Polynoe aspera – synonym of Harmothoe aspera
Polynoe aspera Hansen, 1878 – synonym of Harmothoe aspera
Polynoe asperrima – synonym of Acanthicolepis asperrima
Polynoe asperrima M. Sars, 1861 – synonym of Acanthicolepis asperrima
Polynoe badia – synonym of Bylgides groenlandicus
Polynoe badia Théel, 1879 part – synonym of Bylgides groenlandicus
Polynoe borealis – synonym of Harmothoe borealis
Polynoe borealis Théel, 1879 – synonym of Harmothoe borealis
Polynoe castanea – synonym of Malmgrenia castanea
Polynoe castanea Hornell, 1891 – synonym of Malmgrenia castanea
Polynoe cirrata – synonym of Harmothoe imbricata
Polynoe cirrata Johnston, 1839 – synonym of Harmothoe imbricata
Polynoe extenuata – synonym of Harmothoe extenuata
Polynoe extenuata Grube, 1840 – synonym of Harmothoe extenuata
Polynoe extenuata Hornell, 1891 – synonym of Harmothoe extenuata
Polynoe floccosa – synonym of Harmothoe extenuata
Polynoe floccosa Gibson, 1886 – synonym of Harmothoe extenuata
Polynoe foliosa – synonym of Alentia gelatinosa
Polynoe foliosa Grube, 1870 – synonym of Alentia gelatinosa
Polynoe fuscescens – synonym of Lepidonotus clava
Polynoe fuscescens Quatrefages, 1865 – synonym of Lepidonotus clava
Polynoe gelatinosa – synonym of Alentia gelatinosa
Polynoe gelatinosa M. Sars, 1835 – synonym of Alentia gelatinosa
Polynoe imbricata – synonym of Harmothoe imbricata
Polynoe imbricata Hornell, 1891 – synonym of Harmothoe imbricata
Polynoe imbricata Johnston, 1827 – synonym of Harmothoe imbricata
Polynoe impar – synonym of Harmothoe impar
Polynoe impar – synonym of Harmothoe pagenstecheri
Polynoe impar Hornell, 1891 – synonym of Harmothoe pagenstecheri
Polynoe impar Johnston, 1839 – synonym of Harmothoe impar
Polynoe johnstoni – synonym of Polynoe scolopendrina
Polynoe johnstoni Marenzeller, 1874 – synonym of Polynoe scolopendrina
Polynoe Kinbergi – synonym of Enipo elisabethae
Polynoe kinbergi – synonym of Enipo kinbergi
Polynoe kinbergi Clark, 1969 – synonym of Enipo kinbergi
Polynoe Kinbergi Fauvel, 1923 – synonym of Enipo elisabethae
Polynoe lunulata – synonym of Malmgrenia arenicolae
Polynoe lunulata Delle Chiaje – synonym of Malmgrenia lunulata
Polynoe lunulata Delle Chiaje in Claparède, 1868 – synonym of Malmgrenia lunulata
Polynoe lunulata Hornell, 1891 – synonym of Malmgrenia arenicolae
Polynoe nivea – synonym of Leucia nivea
Polynoe nivea Sars, 1863 – synonym of Leucia nivea
Polynoe nodosa – synonym of Eunoe nodosa
Polynoe nodosa M. Sars, 1860 – synonym of Eunoe nodosa
Polynoe paradoxa – synonym of Neopolynoe paradoxa
Polynoe paradoxa Storm, 1888 – synonym of Neopolynoe paradoxa
Polynoe pellucida – synonym of Adyte pellucida
Polynoe pellucida Ehlers, 1864 – synonym of Adyte pellucida
Polynoe scolopendrina Savigny, 1822 – synonym of Polynoe scolopendrina
Polynoe scolopendrina var. brevipalpa – synonym of Polynoe scolopendrina
Polynoe scolopendrina var. brevipalpa Saint-Joseph, 1888 – synonym of Polynoe scolopendrina
Polynoe setosissima – synonym of Malmgrenia glabra
Polynoe setosissima Hornell, 1891 – synonym of Malmgrenia glabra
Polynoe spinifera – synonym of Harmothoe spinifera
Polynoe spinifera Ehlers, 1864 – synonym of Harmothoe spinifera
Polynoe squamata – synonym of Lepidonotus squamatus
Polynoe squamata Johnston, 1839 – synonym of Lepidonotus squamatus
Polyphysia crassa Hartmann-Schröder, 1971 – synonym of Polyphysia crassa
Polyphysia quaterbranchia – synonym of Polyphysia crassa
Polyphysia quaterbranchia Furreg, 1925 – synonym of Polyphysia crassa
Potamilla neglecta Pettibone, 1954 – synonym of Potamilla neglecta
Potamilla reniformis – synonym of Pseudopotamilla reniformis
Potamilla reniformis McIntosh, 1922 – synonym of Pseudopotamilla reniformis
Potamilla torelli Malmgren, 1865 – synonym of Potamilla torelli
Praegeria remota – synonym of Pisione remota
Praegeria remota Southern, 1914 – synonym of Pisione remota
Praxilla gracilis – synonym of Praxillella praetermissa
Praxilla gracilis Tauber, 1879 – synonym of Praxillella praetermissa
Praxilla lankesteri – synonym of Clymenura lankesteri
Praxilla lankesteri McIntosh, 1885 – synonym of Clymenura lankesteri
Praxilla muelleri – synonym of Proclymene muelleri
Praxilla muelleri Malm, 1874 – synonym of Proclymene muelleri
Praxilla praetermissa – synonym of Praxillella praetermissa
Praxilla praetermissa Malmgren, 1865 – synonym of Praxillella praetermissa
Praxillella affinis Arwidsson, 1906 – synonym of Praxillella affinis
Praxillella praetermissa Arwidsson, 1906 – synonym of Praxillella praetermissa
Praxillella quadrilobata Kirkegaard, 1996 – synonym of Praxillella quadrilobata
Praxillura longissima Arwidsson, 1906 – synonym of Praxillura longissima
Praxithea irrorata – synonym of Nereis irrorata
Praxithea irrorata Malmgren, 1867 – synonym of Nereis irrorata
Prionospio banyulensis Laubier, 1968 – synonym of Prionospio banyulensis
Prionospio cirrifera – synonym of Prionospio multibranchiata
Prionospio cirrifera Auctt. non Wirén – synonym of Prionospio multibranchiata
Prionospio cirrifera Wirén, 1883 – synonym of Prionospio cirrifera
Prionospio fallax Söderström, 1920 – synonym of Prionospio fallax
Prionospio malmgreni – synonym of Prionospio fallax
Prionospio malmgreni Auctt. non Claparède, 1870 – synonym of Prionospio fallax
Prionospio multibranchiata Berkeley, 1927 – synonym of Prionospio multibranchiata
Prionospio ockelmanni – synonym of Prionospio banyulensis
Prionospio ockelmanni Pleijel, 1985 – synonym of Prionospio banyulensis
Prionospio plumosa – synonym of Prionospio steenstrupi
Prionospio plumosa (non Sars) Malm, 1874 – synonym of Prionospio steenstrupi
Prionospio plumosa Söderström, 1920 – synonym of Prionospio plumosa
Prionospio steenstrupi Malmgren, 1867 – synonym of Prionospio steenstrupi
Proceraea aurantiaca Claparède, 1868 – synonym of Proceraea aurantiaca
Proceraea brachycephala – synonym of Autolytus brachycephalus
Proceraea brachycephala – synonym of Autolytus langerhansi
Proceraea brachycephala (non Marenzeller) Langerhans, 1879 – synonym of Autolytus langerhansi
Proceraea brachycephala Marenzeller, 1874 – synonym of Autolytus brachycephalus
Proceraea cornutus – synonym of Proceraea cornuta
Proceraea cornutus Gidholm, 1967 – synonym of Proceraea cornuta
Proceraea picta Ehlers, 1864 – synonym of Proceraea picta
Proceraea prismatica Hartmann-Schröder, 1971 – synonym of Proceraea prismatica
Procerastea halleziana Malaquin, 1893 – synonym of Procerastea halleziana
Procerastea nematodes Langerhans, 1884 – synonym of Procerastea nematodes
Proclea graffii Hessle, 1917 – synonym of Proclea graffii
Proclymene muelleri Arwidsson, 1906 – synonym of Proclymene muelleri
Protodorvillea kefersteini Hartmann-Schröder, 1971 – synonym of Protodorvillea kefersteini
Protodriloides chaetifer Jouin, 1966 – synonym of Protodriloides chaetifer
Protodriloides symbioticus Jouin, 1966 – synonym of Protodriloides symbioticus
Protodrilus adhaerens forma gracilis – synonym of Protodrilus gracilis
Protodrilus adhaerens forma gracilis Jouin in Cabioch et al., 1968 – synonym of Protodrilus gracilis
Protodrilus adhaerens forma major – synonym of Protodrilus adhaerens
Protodrilus adhaerens forma major Jouin, 1970 – synonym of Protodrilus adhaerens
Protodrilus adhaerens Jagersten, 1952 – synonym of Protodrilus adhaerens
Protodrilus affinis Jouin in Cabioch et al., 1968 – synonym of Protodrilus affinis
Protodrilus bahusiensis – synonym of Protodrilus oculifer
Protodrilus bahusiensis Jagersten, 1952 – synonym of Protodrilus oculifer
Protodrilus brevis Jouin, 1970 – synonym of Protodrilus brevis
Protodrilus chaetifer – synonym of Protodriloides chaetifer
Protodrilus chaetifer Remane, 1926 – synonym of Protodriloides chaetifer
Protodrilus ciliatus Jagersten, 1952 – synonym of Protodrilus ciliatus
Protodrilus gracilis Von Nordheim, 1989 – synonym of Protodrilus gracilis
Protodrilus hatscheki Pierantoni, 1908 – synonym of Protodrilus hatscheki
Protodrilus helgolandicus Von Nordheim, 1983 – synonym of Protodrilus helgolandicus
Protodrilus hypoleucus Armenante, 1903 – synonym of Protodrilus hypoleucus
Protodrilus hypoleucus forma tenuis – synonym of Protodrilus hypoleucus
Protodrilus hypoleucus forma tenuis Jouin in Cabioch et al., 1968 – synonym of Protodrilus hypoleucus
Protodrilus oculifer borealis – synonym of Protodrilus oculifer
Protodrilus oculifer borealis Remane, 1932 – synonym of Protodrilus oculifer
Protodrilus oculifer Pierantoni, 1908 – synonym of Protodrilus oculifer
Protodrilus pardii – synonym of Protodrilus adhaerens
Protodrilus pardii Gerlach, 1953 – synonym of Protodrilus adhaerens
Protodrilus purpureus Pierantoni, 1908 – synonym of Protodrilus purpureus
Protodrilus robustus Jägersten, 1952 – synonym of Protodrilus robustus
Protodrilus rubropharyngeus Jägersten, 1940 – synonym of Protodrilus rubropharyngeus
Protodrilus sphaerulatus – synonym of Protodrilus hypoleucus
Protodrilus sphaerulatus Pierantoni, 1908 – synonym of Protodrilus hypoleucus
Protodrilus symbioticus – synonym of Protodriloides symbioticus
Protodrilus symbioticus Giard, 1904 – synonym of Protodriloides symbioticus
Protomystides exigua Pleijel, 1991 – synonym of Protomystides exigua
Protula dysteri – synonym of Salmacina dysteri
Protula dysteri Huxley, 1855 – synonym of Salmacina dysteri
Psamathe cirrhata – synonym of Kefersteinia cirrata
Psamathe cirrhata Keferstein, 1862 – synonym of Kefersteinia cirrata
Psammodrilus balanoglossoides Swedmark, 1952 – synonym of Psammodrilus balanoglossoides
Pseudeulalia exigua – synonym of Protomystides exigua
Pseudeulalia exigua Eliason, 1962 – synonym of Protomystides exigua
Pseudobrania limbata – synonym of Brania limbata
Pseudobrania limbata Kirkegaard, 1992 – synonym of Brania limbata
Pseudoclymene oerstedi – synonym of Euclymene oerstedi
Pseudoclymene oerstedi McIntosh, 1915 – synonym of Euclymene oerstedi
Pseudoclymene quadrilobata – synonym of Praxillella quadrilobata
Pseudoclymene quadrilobata Arwidsson, 1906 – synonym of Praxillella quadrilobata
Pseudomystides limbata Kirkegaard, 1992 – synonym of Pseudomystides limbata
Pseudomystides southerni – synonym of Mystides southerni
Pseudomystides southerni – synonym of Mystides southerni
Pseudomystides spinachia Pleijel, 1993 – synonym of Pseudomystides spinachia
Pseudopolydora antennata – synonym of Polydora antennata
Pseudopolydora antennata Woodwick, 1964 – synonym of Polydora antennata
Pseudopolydora paucibranchiata – synonym of Polydora paucibranchiata
Pseudopolydora paucibranchiata Blake & Kudenov, 1978 – synonym of Polydora paucibranchiata
Pseudopolydora pulchra – synonym of Polydora pulchra
Pseudopolydora pulchra Eleftheriou, 1970 – synonym of Polydora pulchra
Pseudopotamilla reniformis Knight-Jones, 1983 – synonym of Pseudopotamilla reniformis
Pterosyllis formosa – synonym of Amblyosyllis formosa
Pterosyllis formosa Claparède, 1863 – synonym of Amblyosyllis formosa
Pusillotrocha akessoni Westheide & Von Nordheim, 1985 – synonym of Pusillotrocha akessoni
Pygospio elegans Claparède, 1863 – synonym of Pygospio elegans