Type locality: Shumushu Island (Okhotsk Sea, side), Kurile Is., Russia (50°44 N, 156°19 E), 118-120 m.
Description: Shell large (height to 136 mm, holotype), pyriform, white, slender to moderately inflated; periostracum thin, adherent, light brown. Protoconch with 2.5 whorls; teleconch with four whorls; whorls rounded to slightly shouldered, suture moderately impressed. Axial ribs (when present) low, rounded, 12-13 on penultimate whorl, interspaces as broad as ribs. Spiral sculpture of low, broad, rounded cords, 14-18 above the suture; base of final whorl with about 15 similar cords, spaced somewhat further apart. Aperture large, less than half of shell height, canal short, broad.
Radula. Rachidian tooth sub-ovate, strongly excavated anteriorly (almost chevron- shaped); Lateral teeth large, about 400 µm long, tricuspid, outer cusp large, strongly curved, pointed; inner cusp very small, less than 1/5 as long as outer cusp, inner cusp about 3 times as long as inner cusp, thick, strongly curved.
Remarks: The low, broad spiral cords separate this species from all others in the Aleutians. Kantor & Sysoev, 2006 illustrate the holotype of this species as "Beringius marshalli. True Beringius marshalli Dall, 1919 is a slender form of Beringius behringi (Middendorf, 1848), with weak to absent axial folds, and a few faint, irregulär spiral cords.
Etymology: The name honors Koen Fraussen, Aarschot, Belgium, for his work on the Buccinidae, and for providing a paratype.
Distribution: Southern Kamchatka, Kronotskiy Cape and northern most Kurile Islands, Shumushu Island, east to Stalemate Bank, west of Attu Island, Aleutian Islands (?) (50° to 54° N, 156°20 to 171° 15 E), 118-280 m. This is a western Pacific species.
Habitat: Sand and silt.