Clathria beani (Bowerbank, 1866) accepted as Antho (Antho) involvens (Schmidt, 1864) (source of synonymy)
Esperella aegagropila (Johnston, 1842) accepted as Mycale (Aegogropila) contarenii (Lieberkühn, 1859) (additional source)
Esperella macilenta (Bowerbank, 1866) accepted as Mycale (Carmia) macilenta (Bowerbank, 1866) (new combination reference)
Esperiopsis foliata (Bowerbank, 1874) accepted as Clathria (Clathria) barleei (Bowerbank, 1866) (new combination reference)
Esperiopsis normani (Bowerbank, 1866) accepted as Amphilectus fucorum (Esper, 1794) (new combination reference)
Halichondria reticulata (Bowerbank, 1866) accepted as Halichondria (Halichondria) panicea (Pallas, 1766) (source of synonymy)
Homoeodictya foliata (Bowerbank, 1874) accepted as Clathria (Clathria) barleei (Bowerbank, 1866) (new combination reference)
Hymedesmia hallezi Topsent, 1894 accepted as Timea hallezi (Topsent, 1894) (original description)
Hymedesmia zetlandica Bowerbank, 1864 represented as Hymedesmia (Hymedesmia) zetlandica Bowerbank, 1864 (additional source)
Myxilla granulata (Bowerbank, 1866) accepted as Myxilla (Myxilla) fimbriata (Bowerbank, 1866) (new combination reference)
Myxilla radiata (Bowerbank, 1866) accepted as Eurypon radiatum (Bowerbank, 1866) (new combination reference)
Plocamia ambigua (Bowerbank, 1866) accepted as Plocamionida ambigua (Bowerbank, 1866) (source of synonymy)
Pocillon hyndmani (Bowerbank, 1858) accepted as Iophon hyndmani (Bowerbank, 1858) (new combination reference)
Raspailia virgultosa (Bowerbank, 1866) represented as Raspailia (Raspailia) virgultosa (Bowerbank, 1866) (new combination reference)
Reniera mcandrewii (Bowerbank, 1866) accepted as Haliclona (Halichoclona) fistulosa (Bowerbank, 1866) (new combination reference)
Reniera obscura (Bowerbank, 1874) accepted as Haliclona (Rhizoniera) rosea (Bowerbank, 1866) (new combination reference)
Reniera permollis (Bowerbank, 1866) accepted as Haliclona (Reniera) cinerea (Grant, 1826) (new combination reference)
Reniera rosea (Bowerbank, 1866) accepted as Haliclona (Rhizoniera) rosea (Bowerbank, 1866) (new combination reference)
Sycon compressum (Fabricius, 1780) accepted as Grantia compressa (Fabricius, 1780) (new combination reference)
Terpios tenuiculus (Bowerbank, 1882) accepted as Terpios gelatinosus (Bowerbank, 1866) (new combination reference)

Celtic Seas for Hymedesmia hallezi Topsent, 1894 
North Sea for Clathria beani (Bowerbank, 1866) 
North Sea for Esperella aegagropila (Johnston, 1842) 
North Sea for Esperella macilenta (Bowerbank, 1866) 
North Sea for Esperiopsis normani (Bowerbank, 1866) 
North Sea for Hymedesmia hallezi Topsent, 1894 
North Sea for Hymedesmia hallezi Topsent, 1894 
North Sea for Plocamia ambigua (Bowerbank, 1866) 
North Sea for Pocillon hyndmani (Bowerbank, 1858) 
North Sea for Raspailia virgultosa (Bowerbank, 1866) 
North Sea for Reniera obscura (Bowerbank, 1874) 
North Sea for Reniera permollis (Bowerbank, 1866) 
North Sea for Reniera rosea (Bowerbank, 1866) 
North Sea for Sycon compressum (Fabricius, 1780) 
North Sea for Terpios tenuiculus (Bowerbank, 1882)