Galapagos Species Database

The shell has a slender, conical spire with straight or very slightly convex outlines. Height of shell 12.0-14.0 mm, width, 5.1-6.0 mm. The 6.0-6.3 whorls are slightly convex; the first 1.8-2.1 whorls form the em- bryonic shell. The umbilicus is very narrow, 0.6-1.0 mm in diameter at its opening. The color of presumably fresh shells is light brown; living specimens have not been seen, their shells may be darker. The sculpture of the embryonic whorls consists of widely spaced, fine, transverse riblets, S-10 per mm at the end of the first embryonic whorl and 12-16 at end of the second (PI. II, Fig. 3); postembryonic whorls are smooth and shiny, with 7-10 weak, intermittent, spiral lines. The aperture is oval except the columellar region that is fairly straight; the lips are reflected except the upper end of the outer lip; the lip swelling is marginal, moderately thick; the parietal callus also is moderately developed.