Symplectoscyphus interruptus (Pfeffer, 1889)
Synonyms in the area: Sertularia interrupta —Pfeffer 1889 [polyp]; Sertularella modesta Hartlaub, 1900, 1905 [polyp]; Sertularella interrupta —Jäderholm 1910 [polyp]; Symplectoscyphus modestus —Genzano & Zamponi 1997 [polyp].
Distribution in South America: polyp—Pacific Ocean, Chile, at 53.78°S 70.97°W (Galea & Schories 2012a p. 50–51); Atlantic Ocean, Argentina, at ca. 54.80°S in Ushuaia (Hartlaub 1900, 1905; Genzano & Zamponi 1997), at South Georgia Island (Pfeffer 1889; Jäderholm 1910; Blanco 1994a).
Habitat: polyp—from intertidal to 20m depth (Pfeffer 1889; Hartlaub 1905; Jäderholm 1910; Blanco 1994a; Galea & Schories 2012a p. 50–51).