Antarctoscyphus spiralis

Antarctoscyphus spiralis (Hickson & Gravely, 1907)

(Fig. 10 h–j)

Material examined. ANT XV/3: 48-77, one colony, c. 45 mm high; 48-274, one colony, c. 75 mm high; 48-276, one colony, c. 25 mm high; 48-297, one colony, c. 20 mm high; ANT XXI/2: PS65/121, one colony, c. 80 mm high; PS65/132, one colony, c. 65 mm high; PS65/166, one colony, c. 10 mm high, on St. nonscripta; PS65/253, three stems, c. 60, 70, 75 mm high; PS65/265, one colony, c. 65 mm high, and few stems, up to 20 mm high, on St. polarsterni; PS65/274, one colony, c. 75 mm high; PS65/278, one colony, c. 30 mm high.

Ecology and distribution. Previously reported at depths from 6 (Naumov & Stepanjants 1972, as Sertularella spiralis) to 2143 m (Peña Cantero et al. 2017); our material comes from depths between 119 and 417 m. Species with a circum-Antarctic distribution (Stepanjants 1979, as Sertularella spiralis).