Halecium annuliforme Galea & Schories, 2012a

Synonyms in the area: Halecium annulatum —Jäderholm 1920 p. 2; Genzano & Zamponi 1997 [polyp] [non Halecium annulatum Torrey, 1902]; Halecium delicatulum —Blanco, 1968 [polyp]; Halecium sp. Galea, 2007 p. 59 [polyp].

Distribution in South America: polyp—Pacific Ocean, Chile, at 49.18°S in Isla Camello, at ca. 55.28°S in Lennox Island, at 53.7°S 70.9°W (Jäderholm 1920 p. 2; Galea 2007 p. 59; Galea & Schories 2012a p. 30–33); Atlantic Ocean, Argentina, near Tierra del Fuego, Beagle Channel and Lennox Island (Jäderholm 1920; Blanco 1968; Genzano & Zamponi 1997).

Habitat: polyp—from 15 to 46m depth,, on seaweed and other hydroids (Jäderholm 1920 p. 2; Galea 2007 p. 59; Galea & Schories 2012a p. 30–33).