Monotygma lauta is a species of sea snail, a marine gastropod mollusk in the family Pyramidellidae, the pyrams and their allies.

They are marked by many weak, irregular axial riblets and very strong, broad, angular, incised, spiral channels.

These riblets render the flattened and faintly spirally striated, raised spaces between the incised channels feebly crenulated on both edges.

The periphery and the base of the body whorl are well rounded, the latter sculptured like the space between the sutures, with six spiral channels.

The columella is moderately strong, somewhat twisted and slightly reflected with a subobsolete oblique fold near its insertion.