Griffithsia opuntioides J. Agardh, 1842: 76 (syntype localities: various in Tyrrhenian and Ligurian seas).—S. Dixit, 1970: 123.
Taxonomic synonym:
Griffithsia neapolitana Nägeli ex Kützing, 1862: 9, pl. 28: figs. a–c (type locality: Golfo di Napoli, Italy).—G. Murray, 1887: 23.
INDIAN OCEAN DISTRIBUTION: Sri Lanka.
Note: The synonymy was suggested by J. Agardh (1876: 68) and confirmed by Hauck (1882 [1882–1885]: 94).