Ritter-Záhony, 1909
Species of the lyra group. PT: 6-11, H: 9-12. Two "races" have been described by David (1965): a small northern one (mature at BL: 55-60 mm), predominantly subantarctic, and a large southern one (mature at BL: 75-95 mm) predominantly antarctic.
Distribution in the South Atlantic: Antarctic- subantartic A.