(Fig. 1D)
Material examined. TAN 0602/442, a 12-mm-high stem (NIWA 144244).
Remarks. The present material agrees with that frequently reported in Antarctic waters. The hydrotheca, provided with a ringed pedicel, is roughly 700 µm high and 150 µm in diameter at aperture. The isorhizas are around 22 x 9 µm, coinciding with one of the two morphotypes found by Schuchert (2001) in relation to the size of the isorhizas.
Ecology and distribution. The material, which represents the first record of the species for the Balleny Islands, was collected at a depth of 140−150 m off Buckle Island.