Hormathonema violaceonigrum Ercegovic, 1930: 372, fig. 5 (`violaceo-nigrum') (type locality: Dalmatian coast, Croatia).—Golubic, 1976: 123, figs. 1e,f.— Golubic & Hofmann, 1976: pl. 1: fig. 1.— Hoffman, 1976: fig. 3.— Whitton & Potts, 1979b: 5.— Whitton & Potts, 1982: 527.— Golubic, 1985: 11.
INDIAN OCEAN DISTRIBUTION: Aldabra Islands, Australia.
Note: Drouet & Daily (1956: 104), on the basis of the original description, assigned this species to Entophysalis deusta (Meneghini) Drouet & Daily.