Type locality: SE of Agattu Island, Near Ids., Aleutian Is., Alaska (51°47.79 N, 174°45.8E), 135 m. (NMFS 94-200201-143).
Description: Shell of medium size (to 6.7 cm, holotype), elongated fusiform, rather slender, tall spired; cream to orange-brown, cords typically darker; periostracum absent. Protoconch with two whorls; six teleconch whorls, early whorls with five cords; whorls rounded. Spiral cords strong, rounded in cross-section, five to six on penultimate
whorl, and seven similar but smaller cords on the base, Channels between cords about as wide or wider than cords. Aperture short, a little more than 1/3 of shell height, oval; canal constricted, relatively long, slender. Radula: Unknown.
Remarks: This species is similar to Aulacofusus periscelidus (Dali, 1891), but differs in the more numerous (6-7 opposed to 4-5), lower, spiral cords which are rounded in cross-section. It also resembles Aulacofusus brevicauda (Deshayes, 1832) from which it differs in the much fewer spiral cords, 6-7 opposed to 14-16 in A. brevicauda.
Etymology: From the Latin, canaliculata, channeled, in regards to the deep Channels between the spiral ribs Distribution: Central and western Aleutians, from Buldir Island (176°E) to S of Atka Island, Andreanof Ids. (174°W), at depths of 71-135 m.
Habitat: On black sand and bedrock bottoms with a bottom temperature of 4.4-4.9°C.