Shell to 30 mm long, width about one-half height, aperture more than one-half shell length; shell typically mottled brown with white aperture; teleoconch whorls seven, gently rounded, suture shallow, sculpture of numerous (up to 35) weak oblique axial ribs fading on anterior body whorl; spiral sculpture of regular grooves, stronger on base; columellar shield broad, sometimes projecting at shell base; columella with weak lirae anteriorly and posteriorly; lip thickened externally, with numerous low lirae internally behind labial edge. Protoconch multispiral, broadly conic, with axial sculpture.

Shell yellowish-brown, sometimes obscurely spotted and variegated, white within the aperture. Length, 1 in. (Reeve.)

As Amphissa corrugata
Shell of seven or more whorls; covered with a rather thick yellowish epidermis when perfect; longitudinally plicated with obsolete ribs which are evanescent on the lower half of the whorls. In ordinary specimens there are twenty-five or thirty of these plications, with a stout pinch behind the upper angle of the aperture. The riblets are crossed by deep channelled grooves, sparser and deeper on the lower half of the whorl, about thirty-five on the last whorl. The riblets are nearly parallel with the longer axis of the shell.
The columella is usually covered with a thick deposit of callus, the outer edge of which is sharply raised above the whorl, forming a sort of groove. Colors livid brownish, variegated with irregular yellowish and brownish spots not well defined, sometimes livid rufous.
Lon. 1,3 in. to 0,8 in., as extremes; lat. 0,5 in. to 0,35 in. as extremes.

This is the largest species of Amphissa and is most easily recognized by its finer axial sculpture and shallow sutures.

Unalaska, Aleutian Islands, Alaska, to Point Conception, Santa Barbara County, California. Usually intertidal in rocky/ sandy areas, have been found to 25 m or occasionally more, especially in the northern part of the range. Common.

Described as Buccinum corrugatum Reeve, 1846. This is not the Buccinum corrugatum of Brocchi, 1814, and, since it is very abundant on the coast of British Columbia and in Puget Sound, it may take the name columbiana. ( Dall.)
TYPE in Museum Cuming. Type locality, Puget Sound.
RANGE. Chiachi Islands, Alaska, to San Pedro, California.