Lamellaria latens is a species of small, slug-like sea snail, a marine gastropod mollusc in the family Velutinidae.

[2] The shell is not visible externally because it is completely covered by the mantle.

The shell is thin, smooth and fragile, and consists of two whorls with an unobtrusive spire and a somewhat depressed profile.

The part of the animal that is visible is the mantle, and this is smoother and less domed than the rather similar Lamellaria perspicua.

The colour varies but tends to be some shade of tan or brown, with darker flecks.