1. Species Chantransia attenuata Rosenvinge, 1909 accepted as Acrochaetium attenuatum (Rosenvinge) Hamel, 1927 accepted as Colaconema attenuatum (Rosenvinge) R.Nielsen, 1994 accepted as Acrochaetium densum (K.M.Drew) Papenfuss, 1945 accepted as Acrochaetium catenulatum M.Howe, 1914 (synonym)
2. Species Chantransia barbadensis Vickers, 1905 accepted as Acrochaetium barbadense (Vickers) Børgesen, 1915 (synonym)
3. Species Chantransia bonnemaisoniae (Batters) Levring, 1937 accepted as Colaconema bonnemaisoniae Batters, 1896 (synonym)
4. Species Chantransia caespitosa (J.Agardh) Batters, 1896 accepted as Colaconema caespitosum (J.Agardh) Jackelman, Stegenga & J.J.Bolton, 1991 (synonym)
5. Species Chantransia codii (Hamel) Levring, 1937 accepted as Colaconema caespitosum (J.Agardh) Jackelman, Stegenga & J.J.Bolton, 1991 (synonym)
6. Species Chantransia compta (Børgesen) De Toni, 1924 accepted as Colaconema comptum (Børgesen) I.-K.Hwang & H.-S.Kim, 2011 (synonym)
7. Species Chantransia corymbifera Thuret, 1863 accepted as Colaconema corymbiferum (Thuret) Alongi, Cormaci & G.Furnari, 2017 (synonym)
8. Species Chantransia cytophaga Rosenvinge, 1909 accepted as Acrochaetium cytophagum (Rosenvinge) Hamel, 1927 (synonym)
9. Species Chantransia dasyae (Collins) Collins, 1911 accepted as Colaconema dasyae (Collins) Stegenga, I.Mol, Prud'homme & Lokhorst, 1997
10. Species Chantransia dictyotae (F.S.Collins) F.S.Collins, 1911 accepted as Colaconema dictyotae (Collins) I.-K.Hwang & H.-S.Kim, 2011 (synonym)
11. Species Chantransia dumontiae Rosenvinge, 1909 accepted as Acrochaetium dumontiae (Rosenvinge) Hamel, 1927 (synonym)
12. Species Chantransia efflorescens (J.Agardh) Kjellman, 1875 accepted as Grania efflorescens (J.Agardh) Kylin, 1944
13. Species Chantransia emergens Rosenvinge, 1909 accepted as Colaconema emergens (Rosenvinge) R.Nielsen, 1994 (synonym)
14. Species Chantransia gynandra Rosenvinge, 1909 accepted as Colaconema gynandrum (Rosenvinge) R.Nielsen, 1994 (synonym)
15. Species Chantransia hallandica Kylin, 1906 accepted as Colaconema hallandicum (Kylin) Afonso-Carillo, Sanson, Sangil & Diaz-Villa, 2007 (synonym)
16. Species Chantransia hypneae Børgesen, 1909 accepted as Colaconema hypneae (Børgesen) A.A.Santos & C.W.N.Moura, 2010 (synonym)
17. Species Chantransia immersa Rosenvinge, 1909 accepted as Acrochaetium immersum (Rosenvinge) Hamel, 1927 (synonym)
18. Species Chantransia irregularis Reinsch, 1875 accepted as Acrochaetium irregulare (Reinsch) (synonym)
19. Species Chantransia lenormandii (Suhr ex Kützing) Ardissone & Strafforello, 1877 accepted as Acrochaetium secundatum (Lyngbye) Nägeli, 1858
20. Species Chantransia macounii Collins, 1913 accepted as Colaconema macounii (Collins) P.W.Gabrielson, 2000 (synonym)
21. Species Chantransia macula Rosenvinge, 1909 accepted as Acrochaetium macula (Rosenvinge) Hamel, 1927 (synonym)
22. Species Chantransia minutissima (Zanardini) Hauck, 1882 accepted as Rhodochorton velutinum (Hauck) Hamel, 1927 (synonym)
23. Species Chantransia polyblasta Rosenvinge, 1909 accepted as Colaconema hallandicum (Kylin) Afonso-Carillo, Sanson, Sangil & Diaz-Villa, 2007
24. Species Chantransia polyidis Rosenvinge, 1909 accepted as Helminthora divaricata (C.Agardh) J.Agardh, 1852
25. Species Chantransia sanctae-mariae Darbishire, 1910 accepted as Acrochaetium sanctae-mariae (Darbishire) Hamel, 1927
26. Species Chantransia saviana (Meneghini) J.Agardh, 1883 accepted as Acrochaetium savianum (Meneghini) Nägeli, 1862 accepted as Colaconema savianum (Meneghini) R.Nielsen, 1994 (synonym)
27. Species Chantransia saviana (Meneghini) Ardissone, 1883 accepted as Colaconema savianum (Meneghini) R.Nielsen, 1994
28. Species Chantransia virgatula (Harvey) Thuret, 1863 accepted as Acrochaetium secundatum (Lyngbye) Nägeli, 1858 (synonym)
29. Species Chantransia willei A.Henckel, 1909 (uncertain)

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