Stegolaria irregularis Totton, 1930

Synonyms in the area: Stegopoma irregularis —Stepanjants 1979; Blanco 1994a; Blanco et al. 1994; Genzano et al. 2009a; Miranda et al. 2015 [polyp].

Remarks: there are no clear characters to distinguish this species from Stegopoma fastigiatum (see Modeeria rotunda).

Distribution in South America: polyp—Atlantic Ocean, Argentina, at 38.07°S 57.15°W, from 40.25°S to 40.93°S, and around Malvinas (Falkland) Islands (Stepanjants 1979; Blanco 1994a; Blanco et al. 1994; Genzano et al. 2009a; Miranda et al. 2015).

Habitat: polyp—from 240 to 750m (Stepanjants 1979; Blanco 1994a; Blanco et al. 1994; Genzano et al. 2009a).