Note: Penrose & Chamberlain (1993) transferred Fosliella farinosa (Lamouroux) Howe, the type of Fosliella Howe (1920: 587), to Hydrolithon (Foslie) Foslie (1909: 55). The disposition of F. fertilis, which was not transferred, is uncertain.
Melobesia fertilis Lemoine, 1930: 49–50, fig. 12, pl. I: fig. 5 (type locality: Gulf of Panama: Coiba Island).
Fosliella fertilis (Lemoine) Segonzac, 1984: 100, pl. 1: figs. 8, 9, table 1 (including Indian Ocean record).
INDIAN OCEAN DISTRIBUTION: Comoro Islands.
Note: The combination Fosliella fertilis as first used by Segonzac (1983: 250) was not validly published since she did not give a full citation of the basionym and thus failed to satisfy Art. 33.2.