The shell is small, lanceolate, solid, dull buff or brownish buff, evenly dotted with small chestnut-brown spots, which are more or less coalescent into oblique, protractive stripes anteriorly. Surface rather dull, smooth except anteriorly where there are 8 or 10 spiral grooves. The whorls arc almost flat on the spire. The outer lip has a low, rounded thickening outside, is narrowly brown edged, a little excised posteriorly, with seven rather strong but short ridges within. The brown columella has a series of extremely weak denticles, and its base is a small whitish fold within. The degree of concrescence of the brown dots to form protractive stripes is variable. There is sometimes a white band on the last whorl a short distance below the suture.
Length 5.5 mm., diam. 2.3 mm.

Columbella millepunctata is quite different. Our species has some similarity to Columbella velata Reeve, but that is described as "densely reticulated with chestnut,'' and is much larger according to the figure, which, however, may be enlarged, Reeve, as usual, giving no measurements. The habitat of C. velata is unknown.

Pacific Mexico. Mazatlan.