Shell small, 4.25-7 mm., ovate-biconic, rather thin, but prominently sculptured with fold-like obliquely arcuate axials, overridden by dense spiral lirations. Protoconch proportionately large, dome-shaped, of three whorls, tip smooth and planorbid, followed by a whorl of closely spaced spiral threads, and finally a whorl of spiral cords crossed by axial threads. Shoulder sulcus rather narrow; the axials are considerably reduced over the shoulder area but suddenly gain their maximum strength at its lower edge. Aperture narrowly ovate-pyriform, terminating in a short spout-like anterior canal. Sinus deeply concave, occupying the shoulder area. Inner lip smooth, with a broad columellar callus. Operculum vestigial, ovate, with a terminal nucleus.
The genus resembles Propebela in build and in adult sculpture but is more broadly biconic and has a deeply concave sinus; that of Propebela is so shallow that it is scarcely apparent. Range — Antarctic and subantarctic; off Falkland Islands, and the Davis Sea; 110-219 metres.
CHARACTERISTIC SPECIES—
FALKLANDS; thielei Powell, 1951. ANTARCTICA; striatula (Thiele, 1912).