Galapagos Species Database

Description. Shell very small, very thin, with 4 brilliantly polished, translucent, olivaceous whorls; spire depressed but slightly rounded; embryonic and adult whorls with suture with well-defined sculpture of numerous radiating, slightly flexuous, indented varices and lines of growth; last whorl evenly rounded, base smooth, convex; with a narrow deep umbilicus, clearly showing all of the coils; aperture oblique, descending, hardly expanded, peristome sharp and thin. Internal wall covered by numerous pustules, more numerous on the columellar wall; the pustules are strongly acuminated. Radula with aciculiform teeth, 20-1-20 (of the ∞–C–∞ type) (Miquel & Bungartz, 2017).