Orthopyxis compressa (Clark, 1876b)

Synonyms in the area: Campanularia compressa —Hartlaub 1905 p. 562–563; Jäderholm 1905 p. 14–15 [polyp].

Remarks: Schuchert (2013a) considered the species as a synonym of O. integra (MacGillivray, 1842), however we believe that additional studies are necessary to clarify the status of the species.

Distribution in South America: polyp—Pacific Ocean, Chile, in Smyth Channel (Hartlaub 1905 p. 562–563; Nutting 1915 p. 65–66); Atlantic Ocean, Argentina, at Tierra del Fuego and Falklands (Malvinas) Islands (Jäderholm 1905 p. 14–15).

Habitat: polyp—at 15m depth, on algae and Sertularella sp. (Hartlaub 1905 p. 562–563).