Type locality. Davis Sea, Gauss-Station, 66°02.15'S, 89° 38'E, 385 m.
Type material. Holotype: ZMB (M.62983), SL 11 mm. Material examined
Scotia Sea, South Sandwich Islands, southeast of Visokoi Island, RV Islas Orcadas, cruise 575, stn 61, 56° 42.3'S, 27°0.402'W, 93-121 m (USNM 881740, 2 Iv); Ross Sea, Victoria Land, east of Moubray Pennell Bank, RV Eltanin, cruise 32, stn 2117, 73°0'S, 178°06'W, 595-600 m (USNM 898193, 1 sh); Ross Sea, Victoria Land, east of Moubray Pennell Bank, RV Eltanin, cruise 5, stn 272, 64°54'S, 68°24'W, 412 m (USNM 898750, 1 Iv); Scotia Sea, South Sandwich Islands, RV Islas Orcadas, cruise 575, stn 70, 56°24'S, 27°23.6'W; 161-210 m (USNM 904646. 1 Iv).

Morphology
Protoconch (Numanami 1996: fig. 149C) of c.2 moderately convex whorls, diameter 1.1 mm, height 0.92 mm, first whorl flattened on top, protoconch translucent white in colour, covered by very narrow spiral riblets. Protoconch height of holotype is 0.85 mm, diameter 1.1 mm.
Radula (Numanami 1996: fig. 149D; Hain 1990: pl. 27, fig. 1) of hypodermic, simple marginal teeth. Teeth small, c.lOO um long (1.5% of AL without siphonal canal), straight. Tooth canal opening at tooth base laterally, opening roughly triangular, large. Apical opening lateral, long, narrow, oval. No barbs or blade. Tooth with short, blunt spur above basai opening. Teeth connected to vestigial subradular membrane by wide and very thin ligament.
Distribution
Davis Sea, Ross Sea, Weddell Sea, south of Kerguelen Island, 30-600 m (Powell 1960; Dell 1990; Numanami 1996), live 93-412 m.