Lohmann (1902: 89)
Moestrup (1979: 64, figs 2, 6), Buck & Garrison (1983: 1265, figs 2, 3), Chrétiennot-Dinet (1990: 43, figs 140–142)
Cells solitary, non-motile, readily identified by wavy spines projecting from a spherical body. Cell body to 5–9 µm diameter, covered with elliptical plate scales c. 0.4 × 0.8 µm, each bearing a central spine. Spine c. 13–15 µm long, tapering, with short lateral barbs directed towards the apex.
Weddell Sea (Buck & Garrison, 1983); Southern Ocean, south of Australia; East Australian Current (Hallegraeff, 1983); New Zealand (Moestrup, 1979); Greenland, Great Britain, Denmark, Adriatic, Gulf of Aqaba, Indian Ocean and sub-Arctic Pacific Ocean (Booth et al., 1982).