Spongia fucorum n.sp. Esper, 1791-1794: 278, pl. 49 figs. 1-2.
Spongia parasitica n.sp. Montagu, 1818: 34.
Halichondria fucorum : Johnston, 1842: 112, pls. 9, 12 fig.2.
Halichondria thompsoni n.sp. Bowerbank, 1866: 243; Bowerbank, 1874: 107, pl. XLIV figs.1-5.
Isodictya fucorum : Bowerbank, 1866: 322; 1874: 142, pl. LVI figs. 16-19; Higgin, 1886: 84.
Isodictya alderi n.sp. Bowerbank, 1866: 323; Bowerbank, 1874: 143, pl. LVI figs. 20-26.
Isodictya edwardii n.sp. Bowerbank, 1866: 325; 1874: 148, pl. LVIII figs. 15-18.
Isodictya normani n.sp. Bowerbank, 1866: 320; Bowerbank, 1874: 141, pl. LVI figs. 1-5.
Isodictya clarkei n.sp. Bowerbank, 1866: 330; Bowerbank, 1874: 142, pl. LVI figs. 11-15.
Isodictya gracilis n.sp. Bowerbank, 1866: 331; 1874: 149, pl. LVIII figs. 23-26.
Isodictya uniformis n.sp. Bowerbank, 1866: 139, pl. LV figs. 8-10.
Isodictya paupera n.sp. Bowerbank, 1866: 328; 1874: 139, pl. LV figs. 4-7.
Isodictya imitata n.sp. Bowerbank, 1874: 226, pl. LXXVI, figs. 3-6.
Isodictya invalida n.sp. Bowerbank, 1874: 289, pl. LXXXV figs.8-10.
Isodictya dubia n.sp. Bowerbank, 1874: 325, pl. XC figs. 4-7.
Amphilectus fucorum : Vosmaer, 1880: 117; Burton, 1930a: 490; Burton, 1931: 4; Burton, 1931(1932): 168; Burton, 1932: 289, pl.54 figs. 1-4; Topsent, 1932: 2; Arndt, 1935: 53, figs. 92-92A; Alander, 1942: 64; Lévi, 1950b: 16; Lilly et al., 1953; Burton, 1957: 33; Lévi and Vacelet, 1958: 243; Bruce et al., 1963: 46; Könnecker, 1973: 457; Van Soest and Weinberg, 1980: 10; Van Soest et al., 1981: 43; Ackers, 1983: 162; Hiscock et al., 1983 (1984): 26, pl. 4a; Ackers et al., 1985: 132, photos 43-45; Stone et al., 1987: 137.
Isodictya hispida n.sp. Bowerbank, 1882: 136: pl. XII figs. 1-5.
Isodictya involuta n.sp. Bowerbank, 1882: 143: pl. X figs. 1-4.
Isodictya pertenuis n.sp. Bowerbank, 1882: 144: pl. XIII figs. 1-4.
Isodictya scitula n.sp. Bowerbank, 1882: 146: pl. IV figs. 1-3, pl. IX figs. 1-3.
Isodictya collina n.sp. Bowerbank, 1882: 147: pl. XIV figs. 6-13.
Esperia normani : Fristedt, 1885: 42.
Esperiopsis fucorum : Topsent, 1890:201; Topsent, 1891a: 528; Stephens, 1912: 36; Stephens, 1920: 17; Prenant, 1927: 36; Borojevic et al., 1968: 19; Descatoire, 1969a: 198; Cabioch, 1973: 5; Benito, 1976: 498; Solórzano and Babio, 1979: 51; Durán and Solórzano, 1982: 52; Uriz, 1983: 237; Ackers et al., 1992: 116, photos 207-208.
Esperiopsis edwardii : Topsent, 1891a: 528; Topsent, 1894: 8; Prenant, 1927: 36; Topsent, 1899: 105.
Stylotella uniformis : Topsent, 1891a: 528; Topsent, 1894: 8; Prenant, 1927: 36
Esperopsis normani : Topsent, 1894: 8; Brøndsted, 1932: 7.
Esperiopsis involuta : Stephens, 1912: 37.
Esperiopsis clarkei : Arndt, 1913: 114.
Arndt, 1935, lists the following additional combinations as synonyms:
Amphilectus clarkei
Amphilectus compressus
Amphilectus dubius
Amphilectus edwardii
Amphilectus gracilis
Amphilectus imitatus
Axinosia incrustans
Dendoryx thompsoni
Esperella normani
Esperia collina
Esperiopsis collina
Esperiopsis crassofibrosa
Esperiopsis dubius
Esperiopsis gracilis
Esperiopsis informis
Esperiopsis paupera
Esperiopsis thompsoni
Halichondria compressa
Halichondria parasitica
Halispongia parasitica
Hymeniacidon callosus
Myxilla thompsoni
Reniera paupera
Reniera uniformis
Spongia parasitica
Stylinos uniformis