Halecium tehuelchum (d’Orbigny, 1842)

Synonyms in the area: Thoa tehuelcha d’Orbigny, 1846 [polyp].

Remarks: this is the unique record of this doubtful, unrecognizable, species.

Distribution in South America: polyp—Pacific Ocean, Chile, at 46.31°S 75.65°W (Galea et al. 2014 p. 24–25); Atlantic Ocean, Argentina, at Río Negro (d’Orbigny 1842; Blanco 1994a).

Habitat: polyp—on dead gorgonian and worm tube, from 13.5 to 17.3m depth (Galea et al. 2014 p. 24–25).