Crossea gatliffi is a species of small sea snail or micromollusc, a marine gastropod mollusc in the family Conradiidae.

The small, thin shell has a globose-conical shape with four whorls and an elevated spire.

Sculpture:The body whorl shows fine, close spiral threads of which every fourth is larger.

The umbilicus is narrow, bordered by a slight rib, which, continuing to the anterior extremity, is there notched by the pseudocanal.

The thin shell, lack of longitudinal sculpture, tabulated whorls, and feeble basal funicule distinguish it.