Alcyonium pulmonaria Ellis and Sollander, 1786 – synonym of Synoicum pulmonaria
Alcyonium schlosseri Pallas, 1766 – synonym of Botryllus schlosseri
Amaroucium glabrum Hartmeyer, 1924 – synonym of Aplidium glabrum
Amaroucium glabrum Verrill, 1871 – synonym of Aplidium glabrum
Amaroucium pomum Sars, 1851 – synonym of Synoicum pulmonaria
Amaroucium translucidum Hartmeyer, 1910 – synonym of Aplidium glabrum
Aplidiopsis pomum Huitfeldt-Kaas, 1896 – synonym of Synoicum pulmonaria
Aplidiopsis sarsii Huitfeldt-Kaas, 1896 – synonym of Synoicum pulmonaria
Aplidium ficus Alder & Hancock, 1912 – synonym of Synoicum pulmonaria
Aplidium flavum Huitfeldt-Kaas, 1896 – synonym of Aplidium glabrum
Aplidium translucidum Hartmeyer, 1903 – synonym of Aplidium glabrum
Ascidia affinis Alder & Hancock, 1905 – synonym of Ascidiella aspersa
Ascidia affinis Alder & Hancock, 1905 – synonym of Ascidiella scabra
Ascidia alderi Alder & Hancock, 1905 – synonym of Ascidia mentula
Ascidia amoena Alder & Hancock, 1905 – synonym of Ascidia conchilega
Ascidia ampulloides van Beneden, 1847 – synonym of Molgula manhattensis
Ascidia aspersa Müller, 1776 – synonym of Ascidiella aspersa
Ascidia canina Müller, 1776 – synonym of Ciona intestinalis
Ascidia conchilega Müller, 1776 – synonym of Ascidia conchilega
Ascidia crassa Alder & Hancock, 1905 – synonym of Ascidia mentula
Ascidia depressa Alder & Hancock, 1905 – synonym of Ascidia conchilega
Ascidia echinata Linnaeus, 1767 – synonym of Boltenia echinata
Ascidia elliptica Alder & Hancock, 1905 – synonym of Ascidiella scabra
Ascidia elongata Alder & Hancock, 1905 – synonym of Ascidia conchilega
Ascidia falcigera Herdman, 1891 – synonym of Ascidia obliqua
Ascidia gelatinosa Hartmeyer, 1903 – synonym of Ascidia obliqua
Ascidia grossularia van Beneden, 1846 – synonym of Dendrodoa grossularia
Ascidia inornata Alder & Hancock, 1905 – synonym of Ascidia conchilega
Ascidia intestinalis Linnaeus, 1767 – synonym of Ciona intestinalis
Ascidia lepadiformis Müller, 1776 – synonym of Clavelina lepadiformis
Ascidia longisiphonata Kiaer, 1893 – synonym of Ascidia conchilega
Ascidia lovenii Koren & Danielssen, 1851 – synonym of Styela coriacea
Ascidia lurida Hartmeyer, 1903 – synonym of Ascidia obliqua
Ascidia manhattensis De Kay, 1843 – synonym of Molgula manhattensis
Ascidia mentula Müller, 1776 – synonym of Ascidia mentula
Ascidia mollis Alder & Hancock, 1905 – synonym of Ascidia mentula
Ascidia mollis Herdman, 1891 – synonym of Ascidia obliqua
Ascidia morei Alder & Hancock, 1905 – synonym of Ascidiella scabra
Ascidia normani Alder & Hancock, 1905 – synonym of Ascidiella scabra
Ascidia obliqua Alder, 1863 – synonym of Ascidia obliqua
Ascidia papilla Dalyell, 1839 – synonym of Dendrodoa grossularia
Ascidia parallelogramma Müller, 1776 – synonym of Corella parallelogramma
Ascidia patoni Herdman, 1881 – synonym of Ascidia virginea
Ascidia pellucida Alder & Hancock, 1905 – synonym of Ascidiella scabra
Ascidia plana Alder & Hancock, 1905 – synonym of Ascidia mentula
Ascidia plebeia Alder & Hancock, 1905 – synonym of Ascidia conchilega
Ascidia producta Alder & Hancock, 1905 – synonym of Ascidia conchilega
Ascidia prunum Müller, 1776 – synonym of Ascidia prunum
Ascidia pulchella Alder, 1863 – synonym of Ciona intestinalis
Ascidia pustulosa Alder & Hancock, 1905 – synonym of Ascidiella aspersa
Ascidia robusta Alder & Hancock, 1905 – synonym of Ascidia mentula
Ascidia rubicunda Alder & Hancock, 1905 – synonym of Ascidia mentula
Ascidia rubrotincta Alder & Hancock, 1905 – synonym of Ascidia mentula
Ascidia rudis Alder & Hancock, 1905 – synonym of Ascidia mentula
Ascidia scabra Müller, 1776 – synonym of Ascidiella scabra
Ascidia sordida Alder & Hancock, 1905 – synonym of Ascidiella scabra
Ascidia tubifera Örsted, 1844 – synonym of Molgula manhattensis
Ascidia venosa Alder & Hancock, 1905 – synonym of Ascidia virginea
Ascidia venosa Müller, 1776 – synonym of Ascidia mentula
Ascidia virginea Müller, 1776 – synonym of Ascidia virginea