Type material. NE of Semisopochnoi Island, Rat Islands, Aleutian Islands, Alaska (52° 21.44' N, 179° 49.23* W = LACM 1986-329), R. Baxter, 10 September 1986, 168 m, holotype LACM 3403, 8.4 mm, lv. Paratypes: off village of Makushin, Makushin Bay, NW side Unalaska Island, Aleutian Islands, Alaska (53°46.16' N, 166°58.83' W - LACM 1986-301), 18 m, R. Baxter, 20 September 1986, LACM 3404, 1 dd (fragment); west of Tanaga Island, Andreanof Islands, Aleutian Islands County, Alaska (51°44.50' N, 178°7.68' E = LACM 1997-154), 95 m, R.N. Clark, RV Dominator, 15 July 1997, LACM 3405, 2 dd; Sitkin Strait, Adak Island, Andreanof Islands, Aleutian Islands, County, Alaska (51054.8'N, 176°50.6' W = LACM 1997-186), 103 m, shell fragments, R.N. Clark, RV Dominator, 23 July 1997, LACM 3406, 2 dd; SE side Petrel Bank, NE of Semisopochnoi Island, Rat Islands, Aleutian islands, County, Alaska (52° 10.34' N, 179°59.09' W = LACM 1986-326), 165 m, R. Baxter, 8 September 1986, LACM 3407, 1 lv; NE end Petrel Bank, NE of Semisopochnoi Island, Rat Islands, Aleutian Islands County, Alaska (52° 18.00' N, 179°54.50' W = LACM 1986-328), 113 m, R. Baxter, 10 September 1986, LACM 3408, 1 lv, juv.; NE of Adak Island, Andreanof Islands, Aleutian Islands, Alaska (51° 58.50' N, 176° 22.95' W), 121 m, R.N. Clark, R/V Dominator (sta. 23-971-122 = LACM 1997-152), 11 July 1997, LACM 3409(1 lv, 1 dd). Distribution. Aleutian Islands, Alaska, living at 121—168 m.

Description. Shell small for genus, up to 8.7 mm in length (paratype LACM 3406), length/width ratio 1.9-2.1. Shape lanceolate, biconical, broadly ovate, lightly built, subsutural ramp broad, strongly sloping, weakly convex. Color entirely white. Spire high with 1.5 protoconch whorls and up to four broad, strongly convex teleoconch whorls; suture impressed. Protoconch comparatively large, weakly shouldered, smooth, maximum width 700 µm. Terminal lip delicate, thin, low, very weakly curved. Axial sculpture of teleoconch whorls consisting of numerous, low, weak, thin, close-set lamellae, of same height from suture to tip of siphonal canal, more flattened on siphonal canal. Last teleoconch whorl of holotype with more than 60 lamellae; penultimate with approximately 40 lamellae; antepenultimate with 38-40; previous whorls partly eroded or with damaged lamellae. Spiral sculpture of very low, lightly rounded, shallow, broad, primary cords. Last whorl with P1—P6; P1—P4 of approximately same breadth, height; P5—P6 lower, narrower, indistinct. Aperture moderately large, ovate; columellar lip narrow, smooth, rim adherent. Outer lip thin, smooth. Siphonal canal short, comparatively narrow, straight, broadly open ventrally, with numerous, low lamellae over entire length.

Remarks. The largest shell (paratype LACM 3406) may not be fully adult with only four teleoconch whorls, but the form of the shell, the number and pattern of the axial lamellae is very peculiar and cannot be confused with any other species.
Etymology. Named after the Aleutian Islands where the specimens were collected.