Shell with convex whorls, which are sometimes slightly shouldered above, and a sharp apex, the suture plainly marked; last whorl bluntly angulated at base, sculptured throughout with delicate, evenly spaced grooves; aperture irregularly oval, the lip extending above angle of penultimate whorl; columella flattened, ending in a ridge below, behind which the parietal wall is excavated. Color bluish or greenish white, alternating with square, brown tessellations, the tessellations in oblique or zigzag rows; aperture brownish purple, the inside of outer Hp showing the outside color "pattern.
Length, 15; diameter, 10 mm.
Ensenada Honda, Culebra, two specimens.
This species resembles L. ziczac in many respects, but is rather shorter in proportion, has more rounded whorls, which are often slightly shouldered above; the aperture is more purplish and has no white band within.