Oenopota nazanensis: Shell short-fusiform, white with a brown band in front of the suture and another on the base, or all white with about five whorls and a very small blunt nucleus, suture distinct, whorls moderately rounded; axial sculpture of (on the penultimate whorl about 25) narrow, crowded, sigmoid ribs not passing the periphery but extending from the preceding suture with narrower interspaces; spiral sculpture of narrow grooves with wider interspaces, more close toward the base and on the spire cutting the summits of the ribs; aperture simple, pillar white, erased; canal short, straight. Height of shell, 11; of last whorl, 8; diameter, 5.5 mm. (Dall.)

Type locality. Plover Bay.
Distribution. Off Kesennuma in Iwate Prefecture, and northern part of Sea of Japan, both northwards to southern Kurile Islands; eastern and southern Kamchatka, and Bering and Chukchi Seas; 4-380 m [410-450 m].
Material examined. WA05-DE450 (1); WA07-B410D (2).
Remarks. The material examined agrees reasonably well with the specimens identified by Bogdanov (1990) and Kantor and Sysoev (2006) as C. lawrenciana in having a rather globose shell
with recurved strong axial and fine but distinct spiral cords. There seems to be a considerable variation in adult size within this species; one illustrated by Kantor and Sysoev (2006: pi. 113, fig. L) measures 15.3 mm SL, whereas the smallest specimen examined was of 8.0 mm SL (Fig. 365). This is the first record of this species in Japanese waters.

Oenopota nazanensis: Type locality, Nazan Bay, Atka Island, Aleutian Islands.
RANGE. Norton Sound, Alaska, to Aleutian Islands.