Dictyoclathria beanii (Bowerbank, 1866) accepted as Antho (Antho) involvens (Schmidt, 1864) (source of synonymy)
Endectyon delaubenfelsi Burton, 1930 represented as Endectyon (Endectyon) delaubenfelsi Burton, 1930 (original description)
Halichondria bowerbanki Burton, 1930 represented as Halichondria (Halichondria) bowerbanki Burton, 1930 (original description)
Hymedesmia armiger (Bowerbank, 1882) accepted as Hymedesmia (Hymedesmia) armigera (Bowerbank, 1882) (new combination reference)
Hymedesmia baculifera (Topsent, 1901) represented as Hymedesmia (Hymedesmia) baculifera (Topsent, 1901) (additional source)
Hymedesmia brondstedi Burton, 1930 accepted as Hymedesmia (Stylopus) coriacea (Fristedt, 1885) (original description)
Hymedesmia crux (Schmidt, 1875) represented as Hymedesmia (Hymedesmia) crux (Schmidt, 1875) (additional source)
Hymedesmia curvichela Lundbeck, 1910 represented as Hymedesmia (Hymedesmia) curvichela Lundbeck, 1910 (additional source)
Hymedesmia dendyi Burton, 1930 represented as Hymedesmia (Stylopus) dendyi Burton, 1930 (original description)
Hymedesmia digitata Lundbeck, 1910 represented as Hymedesmia (Hymedesmia) digitata Lundbeck, 1910 (additional source)
Hymedesmia helgae Stephens, 1916 represented as Hymedesmia (Hymedesmia) helgae Stephens, 1916 (additional source)
Hymedesmia koehleri (Topsent, 1896) represented as Hymedesmia (Hymedesmia) koehleri (Topsent, 1896) (additional source)
Hymedesmia mucronata (Topsent, 1904) represented as Hymedesmia (Hymedesmia) mucronata (Topsent, 1904) (additional source)
Hymedesmia mutabilis (Topsent, 1904) represented as Hymedesmia (Hymedesmia) mutabilis (Topsent, 1904) (additional source)
Hymedesmia occulta Bowerbank in Norman, 1869 represented as Hymedesmia (Hymedesmia) occulta Bowerbank in Norman, 1869 (additional source)
Hymedesmia pansa Bowerbank, 1882 represented as Hymedesmia (Hymedesmia) pansa Bowerbank, 1882 (additional source)
Hymedesmia paupertas (Bowerbank, 1866) represented as Hymedesmia (Hymedesmia) paupertas (Bowerbank, 1866) (additional source)
Hymedesmia peachii Bowerbank, 1882 represented as Hymedesmia (Hymedesmia) peachii Bowerbank, 1882 (additional source)
Hymedesmia pilata Bowerbank, 1882 represented as Hymedesmia (Hymedesmia) pilata Bowerbank, 1882 (additional source)
Hymedesmia radiata Bowerbank, 1866 accepted as Eurypon radiatum (Bowerbank, 1866) (additional source)
Hymedesmia spinosa Stephens, 1916 represented as Hymedesmia (Hymedesmia) spinosa Stephens, 1916 (additional source)
Hymedesmia stephensi Burton, 1930 represented as Hymedesmia (Stylopus) stephensi Burton, 1930 (original description)
Hymedesmia tenuisigma Lundbeck, 1910 represented as Hymedesmia (Hymedesmia) tenuisigma Lundbeck, 1910 (additional source)
Hymedesmia truncata Lundbeck, 1910 represented as Hymedesmia (Hymedesmia) truncata Lundbeck, 1910 (additional source)
Hymedesmia zetlandica Bowerbank, 1864 represented as Hymedesmia (Hymedesmia) zetlandica Bowerbank, 1864 (additional source)
Iophon hyndmani (Bowerbank, 1858) (additional source)
Mycale similaris (Bowerbank, 1874) accepted as Mycale (Carmia) subclavata (Bowerbank, 1866) (additional source)
Pachaxinella Burton, 1930 accepted as Homaxinella Topsent, 1916 (original description)
Pachaxinella subdola (Bowerbank, 1866) accepted as Homaxinella subdola (Bowerbank, 1866) (basis of record)

Celtic Seas for Endectyon delaubenfelsi Burton, 1930 
Celtic Seas for Halichondria bowerbanki Burton, 1930 
Celtic Seas for Hymedesmia brondstedi Burton, 1930 
Celtic Seas for Hymedesmia paupertas (Bowerbank, 1866) 
Celtic Seas for Hymedesmia radiata Bowerbank, 1866 
Celtic Seas for Hymedesmia stephensi Burton, 1930 
Celtic Seas for Hymedesmia zetlandica Bowerbank, 1864 
Celtic Seas for Iophon hyndmani (Bowerbank, 1858) 
Celtic Seas for Mycale similaris (Bowerbank, 1874) 
Celtic Seas for Pachaxinella subdola (Bowerbank, 1866) 

Holotype BMNH 1910.1.1.228, geounit Celtic Seas, identified as Halichondria subdola Bowerbank, 1866
Holotype BMNH 1929.8.21.3, geounit Celtic Seas, identified as Endectyon delaubenfelsi Burton, 1930
Holotype BMNH 1929.8.21.5, geounit Celtic Seas, identified as Hymedesmia stephensi Burton, 1930

 Synonymy

 for Spongia coalita Müller, 1776

See Burton (1930) for an extensive explanation. This is not Spongia coalita sensu Lamarck, 1815, Lamouroux, 1816, ... [details]