Genus Antarctospira Kantor, Harasewych & Puillandre, 2016

(family Borsoniidae)

Antarctospira Kantor, Harasewych & Puillandre, 2016: 4–5 .

Type species

Leucosyrinx badenpowelli Dell, 1990 (OD).

Remarks

The Antarctic-subAntarctic genus Antarctospira shares the axial sculpture pattern as well as the shape and position of the anal sinus with Leucosyrinx (Kantor et al. 2016) . Notably, four out of the five species attributed to Antarctospira were initially classified as Leucosyrinx: Antarctospira badenpowelli (Dell, 1990) (type species), A. mawsoni (Powell, 1958), A. paragenota (Powell, 1951), A. falklandica (Powell, 1951) . However, the examination of the radula revealed that Antarctospira possesses a radula with hypodermic marginal teeth thus suggesting its placement within the family Borsoniidae Bellardi, 1875 . Furthermore, all species of Antarctospira have a much shorter and broader siphonal canal, which is barely separable from high and broad aperture. Its paucispiral protoconch is larger, attaining 2.5 mm in diameter (vs ca 1 mm in Leucosyrinx).