Clathurella lamellosa Sowerby III, 1896 Nepotilla lamellosa is a species of sea snail, a marine gastropod mollusk in the family Raphitomidae.

The spiral tricarinate keels, of which there are four on the body whorl, as well as the interstices, are crossed by fine close lamellae.

The base of the shell is contracted, lirate and slightly rostrate.

The outer lip is arcuate and strongly sinuated.

The unique specimen is straw-coloured, with a single brown blotch in front.