« Shell large, trochoid, biconical, wider than high, particularly in juveniles. Protoconch of slightly more than 0.75 whorls, with very fine flocculation; apertural varix not connected to embryonic cap, apertural margin slightly sinusoid. Teleoconch I of 0.5 to 0.65 whorls, with 17–30 fine axial cords, often partly eroded, spiral cord in position of selenizone. Teleoconch II up to three whorls, suture approximately one to three selenizone widths below selenizone (one to three spirals between suture and selenizone), convex shoulder with 89–90 axials on body whorl… » – Høisaeter & Geiger: op. cit.

« Spirals starting with one median spiral between axials 4 and 5, after two axials, one new spiral on each side of first (all three on slightly concave lower part of shoulder), number of spirals increasing rapidly to 8–10 on next half whorl, then gradually to 17–18 spirals at aperture; spirals one order of magnitude finer than axials, not crossing axials completely, but creating a series of small nodules on axials of body whorl. Adsutural spiral-free band not much wider than distance between spirals. » – Ibid.

« Base slightly convex, with 28–30 spirals crossing approximately 130 (5 mm specimen) only slightly stronger axials, creating regular grid of rectangular “pits”; these axials descending into fairly wide, deep umbilicus. Umbilicus open, without funiculus. Selenizone at periphery, narrow, keels distinct, axial lamellae distinct at least partly coordinated with axials. Margins of slit mostly parallel but slightly converging towards end. Aperture round; lower, inner lip flared, especially in juveniles. Columellar lip evenly rounded. Snails collected alive with translucent, yellowish hue, with rust-colored deposits in pits of sculptured surface. » – Ibid.