Halymenia membranacea Harvey, 1844c: 448–449 (type locality: Georgetown, Tasmania).
Rhodophyllis membranacea (Harvey) J. Hooker & Harvey in Harvey, 1855a: 247.—Harvey, 1863: xl.— Sonder, 1880: 19.
INDIAN OCEAN DISTRIBUTION: Australia.
Note: The attribution of this species to Western Australia by Harvey and Sonder is in conflict with the treatment by Womersley (1994: 415), who cited Nuyts Reef, South Australia, as the westernmost locality.