Catenella major Sonder, 1845: 57 (type locality: Western Australia).—Sonder, 1848 [1846–1848]: 171.— Kützing, 1849: 724.— Kützing, 1866: 25, pl. 72: figs. a–c.
Coeloclonium major (Sonder) P. Silva.
Rhabdonia ? sonderi J. Agardh, 1851 [1851–1863]: 356, nom. illeg.—Sonder, 1880: 28 (with query).
Taxonomic synonym:
* Chylocladia opuntioides Harvey, 1855b: 556 (syntype localities: various in Western Australia).
Chondria opuntioides (Harvey) Harvey, 1859b: 297.—Harvey, 1863: xix.
Coeloclonium opuntioides (Harvey) J. Agardh, 1876: 640–641.—Sonder, 1880: 29.— Falkenberg, 1901: 211–213, pl. 22: figs. 32–34.— De Toni, 1903: 825.— Lucas, 1909: 40.— Mazza, 1922 [1919–1925]: 112–115.— De Toni, 1924: 380.— Lucas & Perrin, 1947: 256–257.— V. May, 1965: 383.— Huisman & Walker, 1990: 433.
INDIAN OCEAN DISTRIBUTION: Australia.
Note: The conspecificity of Catenella major and Chylocladia opuntioides was proposed by Harvey (1859b: 297), who, however, incorrectly adopted the younger name. Rhabdonia ? sonderi is a superfluous substitute name for Catenella major.