Shell ovate, elevated, conical, with concave slopes, especially the posterior one, yellowish with a green tinge in some parts, especially on the posterior slope, and a few scattered, short, purple-brown streaks; the sculpture consists of eleven prominent, radiating ribs, of which those on the posterior slope are strongest, the interspaces on the front-side each with 3 riblets, ot which the middle one is the strongest; on the sides and posterior slope they amount to seven, of which the fourth is stronger than the others, the second and sixth are thinner, the first, third, fifth and seventh are the thinnest. The ribs are crossed by very fine growth-striae and by about 20 concentric lirae, forming rather conspicuous scales on the radiating ribs, the strongest on the posterior 3 ribs. Foramen inclined towards the front, keyhole-shaped, rounded in front, enlarged behind, with 2 inconspicuous denticles at each side. Base oval, margin crenulated and angular, especially at the ends of the 3 posterior ribs; interior white, with grooves corresponding to the principal ribs; hole-callus thick, truncated behind, with a rather deep pit behind the truncature. Long. 20 mm, lat. 13mm, alt. 9 mm, length of front slope 6,5 mm of posterior one 11,5 mm, of perforation 2 mm.

This new species is allied to D. calyculata Sow., but differs by the concave posterior slope, which is convex in D. calyculata, by the elongated keyhole-shaped perforation, by the smaller number of prominent ribs, which are much differentiated, especially on the front part, by the colour, which is yellowish instead of pink, by the strong hole-callus, with shallower pit behind.

Type Location: Indonesia. Nusa Tenggara Barat. Parugalamere.