Type locality. OfF Urup Island near Kitovyi Cape, 150 m [Middle Kurile Islands]. Distribution. Off Soma in Fukushima Prefecture and northwards to northern and western Okhotsk Sea; 15(h345 m [1350-1500 m].
Material examined. WA06-F1500D-1 (5+le); WA07-A450 (1); TS96-K2 [1451-1455 m]
(16+17e).
Remarks. There is a considerable variation in the shell morphology among the specimens examined. Some specimens have a relatively slender shell with fine sculpture (Fig. 353), whereas others have a shorter shell with angulate shoulder and coarser axial sculpture (Fig. 356). However, all agree reasonably well with the type specimens illustrated by Bogdanov (1985), although the figures are not very clear for precise identification. Furthermore, the vertical distribution of the present specimens is significantly deeper than that of the type material. Kantor and Sysoev (2006) mentioned that no material of this taxon, including types, was found in Zoological Institute of the Russian Academy of Science. The present material also somewhat resembles Oenopota pygmaea (Verrill, 1882) as figured by Bogdanov (1990), however, and examination of the radula will be necessary for precise identification.