(Fig. 11b, 12b)
Material examined. ANT XVII /3: 111-7, several stems, up to 35 mm high, on O. terranovae, with gonothecae; ANT XXI /2: PS65/281, some stems, up to 60 mm high, on O. terranovae and gravel, with developing gonothecae.
Ecology and distribution. Reported at depths from 8 (Naumov & Stepanjants 1972, as Sertularella
cumberlandica) to 540 m (Peña Cantero 2012); present material collected at 67– 82 m. Species widely distributed in Antarctic waters, with circum-Antarctic distribution (Peña Cantero et al. 2002), but previously not documented from the Weddell Sea.