Initial part of teleconch sculptured with fine granules, regularly arranged to form seven spiral lines.

Sculpture gradually disappearing and becoming smooth towards body whorl excepting irregular growth lines, but remaining faintly at base.

Nacreous part of parietal wall widely extended beyond umbilicus by secondary resorption.

Coloration dark greenish brown, aperture pearly white, umbilical area orange.

Head part and eyestalks brown; black pigmentation present transversely at tip of snout.

[2] Lunella ogasawarana is native to Chichijima and Anijima, Ogasawara Islands, Japan (27˚5´N, 142˚12´E), where it is found in the upper intertidal, on sandy beaches covered with boulders.