Sarcogyne angulosa C. W. Dodge & G. E. Baker, described as an endemic from continental Antarctic localities, is reduced to synonymy with S. privigna (Ach.) A. Massal., a species known from Europe, North America, North Africa and Saudi Arabia, and now Antarctica. The relationship to Polysporina simplex (Davies) Vězda is discussed. It is suggested that the name Sarcogyne grisea Dodge, also described as an Antarctic endemic, should be abandoned. Sarcogyne medusula Dodge is transferred to Lecidea [Lecidea medusula (C. W. Dodge) Hertel comb, nov.], a Maritime- and Subantarctic species.