Homoeostrichus spiralis J. Agardh, 1894b: 89–90 (type locality: Eucla, Western Australia).—Lucas, 1909: 15.— Lucas, 1936: 86.
Zonaria spiralis (J. Agardh) Papenfuss, 1944a: 341.—Womersley, 1967: 227.— Womersley, 1987: 250, 252.— Huisman & Walker, 1990: 378.
Taxonomic synonym (fide Womersley, 1967: 227):
* Zonaria interrupta (Lamouroux) C. Agardh var. spiralis Harvey, 1855b: 535 (syntype localities: Cape Riche and Rottnest Island, Western Australia).
INDIAN OCEAN DISTRIBUTION: Australia.