Abothrium Van Beneden, 1870 (additional source)
Abothrium gadi Van Beneden, 1870 (additional source)
Acanthochondria Oakley, 1930 (additional source)
Acanthonotozomatidae Stebbing, 1906 (additional source)
Aeginina Norman, 1905 (additional source)
Agalma Eschscholtz, 1825 (additional source)
Ampeliscidae Krøyer, 1842 (additional source)
Amphilochidae Boeck, 1871 (additional source)
Amphilochus Spence Bate, 1863 (additional source)
Amphithopsis Boeck, 1861 (additional source)
Amphithopsis longicaudata Boeck, 1861 (additional source)
Ampithoidae Boeck, 1871 (additional source)
Andaniopsis G.O. Sars, 1891 (additional source)
Andaniopsis nordlandica (Boeck, 1871) (additional source)
Anthobothrium Van Beneden, 1850 (additional source)
Aoridae Stebbing, 1899 (additional source)
Apherusa Walker, 1891 (additional source)
Apolemia Eschscholtz, 1829 (additional source)
Archaeobalaninae Newman & Ross, 1976 (additional source)
Argissa Boeck, 1871 (additional source)
Argissidae Walker, 1904 (additional source)
Artotrogidae Brady, 1880 (additional source)
Artotrogus Boeck, 1859 (additional source)
Ascidia obliqua Alder, 1863 (additional source)
Ascothoracida (additional source)
Asterope mariae (Baird, 1850) accepted as Cylindroleberis mariae (Baird, 1850) (additional source)
Astyra Boeck, 1871 (additional source)
Astyra abyssi Boeck, 1871 (additional source)
Astyridae Pirlot, 1934 accepted as Astyrinae Pirlot, 1934 (additional source)
Balanus hameri (Ascanius) accepted as Chirona hameri (Ascanius, 1767) (additional source)
Bathymedon longimanus (Boeck, 1871) (additional source)
Bathymedon obtusifrons (Hansen, 1883) (additional source)
Bathymedon saussurei (Boeck, 1871) (additional source)
Bimeria Wright, 1859 (additional source)
Bolbosoma capitatum (von Linstow, 1880) Porta, 1908 (additional source)
Bolbosoma vasculosum (Rudolphi, 1819) Porta, 1908 (additional source)
Bomolochidae Claus, 1875 (additional source)
Brachiella Cuvier, 1830 (additional source)
Caligidae Burmeister, 1835 (additional source)
Caligus Müller O.F., 1785 (additional source)
Campanularia hincksii Alder, 1856 (additional source)
Caprella Lamarck, 1801 (additional source)
Caprella equilibra Say, 1818 (additional source)
Caprella penantis Leach, 1814 (additional source)
Caprella septentrionalis Krøyer, 1838 (additional source)
Caprellidae Leach, 1814 (additional source)
Ceradocus A. Costa, 1853 (additional source)
Charopinus Krøyer, 1863 (additional source)
Chelophyes Totton, 1932 (additional source)
Chelophyes appendiculata (Eschscholtz, 1829) (additional source)
Chirona Gray, 1835 (additional source)
Chiroteuthis A. d'Orbigny, 1841 (additional source)
Chlamys islandica (O. F. Müller, 1776) (additional source)
Chondracanthidae Milne Edwards, 1840 (additional source)
Clausiidae Giesbrecht, 1895 (additional source)
Clausocalanidae Giesbrecht, 1893 (additional source)
Clavella Oken, 1815 (additional source)
Corophiidae Leach, 1814 (additional source)
Corynosoma magdaleni Montreuil, 1958 (additional source)
Corynosoma semerme (Forssell, 1904) Lühe, 1911 (additional source)
Corynosoma strumosum (Rudolphi, 1802) Lühe, 1904 (additional source)
Cucullanus cirratus Müller, 1777 (additional source)
Cyclopidae Rafinesque, 1815 (additional source)
Cyclopina Claus, 1863 (additional source)
Cymbasoma Thompson I.C., 1888 (additional source)
Cystisomatidae Willemöes-Suhm, 1875 (additional source)
Depastridae Haeckel, 1879 accepted as Haliclystidae Haeckel, 1879 (additional source)
Dexamine Leach, 1814 (additional source)
Dexaminidae Leach, 1814 (additional source)
Didemnum albidum (Verrill, 1871) (additional source)
Dulichia monacantha Metzger, 1875 accepted as Dyopedos monacantha (Metzger, 1875) accepted as Dyopedos monacanthus (Metzger, 1875) (additional source)
Dynamena cornicina McCrady, 1859 accepted as Dynamena disticha (Bosc, 1802) (additional source)
Dyopedos Spence Bate, 1857 (additional source)
Echeneibothrium Van Beneden, 1849 (additional source)
Echeneibothrium variabile Van Beneden, 1850 (additional source)
Echinorhynchus gadi Zoega in Müller, 1776 (additional source)
Epimeria A. Costa in Hope, 1851 (additional source)
Epimeriidae Boeck, 1871 (additional source)
Ergasilidae Burmeister, 1835 (additional source)
Ergasilus Nordmann, 1832 (additional source)
Eudendrium insigne Hincks, 1861 accepted as Eudendrium ramosum (Linnaeus, 1758) (additional source)
Eudistoma Caullery, 1909 (additional source)
Euphrosine Lamarck, 1818 (additional source)
Eupyrgidae Semper, 1867 (additional source)
Eurytemora Giesbrecht, 1881 (additional source)
Eusiridae Stebbing, 1888 (additional source)
Eusirus propinquus G.O. Sars, 1893 accepted as Eusirus propinqvus G.O. Sars, 1893 (additional source)
Forskalia Kölliker, 1853 (additional source)
Gammarellus Herbst, 1793 (additional source)
Gammaridae Latreille, 1802 (additional source)
Gammarus obtusatus Dahl, 1938 accepted as Echinogammarus obtusatus (Dahl, 1938) accepted as Marinogammarus obtusatus (Dahl, 1938) (additional source)
Gitanopsis G.O. Sars, 1892 (additional source)
Grillotia Guiart, 1927 (additional source)
Grillotia erinaceus (van Beneden, 1858) Guiart, 1927 represented as Grillotia (Grillotia) erinaceus (van Beneden, 1858) Guiart, 1927 (additional source)
Grillotiidae Dollfus, 1960 accepted as Lacistorhynchidae Guiart, 1937 (additional source)
Gyrodactylidae Cobbold, 1864 (additional source)
Haemobaphes Steenstrup & Lütken, 1861 (additional source)
Halice abyssi Boeck, 1871 (additional source)
Halicyclops Norman, 1903 (additional source)
Halimocyathus James-Clark, 1863 (additional source)

 Authority

 for Siboglinum inerme Southward & Southward, 1958

Siboglinum inerme Southward and Southward, 1958 [details]

 Classification

 for Calocalanus Giesbrecht, 1888

Genus in Paracalanidae The creation of the family Calocalanidae from the genus Calocalanus, originaly placed in ... [details]

 Classification

 for Ischnocalanus Bernard, 1963

Genus in Paracalanidae The creation of the family Calocalanidae from the genus Calocalanus, originaly placed in ... [details]

 Classification

 for Metridia Boeck, 1865

Genus in Metridinidae [details]

 Classification

 for Pleuromamma Giesbrecht in Giesbrecht & Schmeil, 1898

Genus in Metridinidae [details]

 Distribution

 for Symbion pandora Funch & Kristensen, 1995

It appears likely its distribution is related to that of its host. [details]

 Ecology

 for Symbion pandora Funch & Kristensen, 1995

They live on the mouthparts of the Dublin Bay prawn or Norway lobster Nephrops norvegicus. [details]