Bathyliotina lamellosa: Shell depressedly turbinate, yellowish-white, whorls 4,5; upper ones forming a slightly concave spire, nucleus rather smooth, followed by a whorl, with regular, distinct ribs, slightly angular at some distance from the suture, from there towards the aperture the suture is excavated and the shell bears strong ribs, becoming more distant as they approach the aperture, and being obsolete on the last half whorl: these ribs have blunt spines, bordering the margin of the subsutural excavation, and sharper ones at the periphery, which is keeled in the interstices of the ribs. Last whorl with another keel at some distance from the periphery, with rather obsolete indications of spines, corresponding to those of the upper keel, the space between the keels and above the periphery somewhat concave. Umbilicus pervious, its margin strongly crenulated or folded, the folds entering the umbilicus and partly running upwards, towards the lower keel. Aperture circular, its inner lip protracted, outer lip very broad and thick, broadest at its upper part, slightly excavated and reflected externally. The whole exterior of the shell covered by low, crowded lamellae.
Alt. 4 mm, diam. maj. 7,5 mm, apert. alt. et lat 2,4 mm.

Bathyliotina lamellosa: Allied to L. siderea Reeve, but more depressed if seen on the apertural side, the shape differs by the more prominent peripheral keel, the outer lip is broader etc.

Bathyliotina lamellosa: Philippines. Sulu Archipelago.