Fossarus (Gottoina) doliaris A. Adams, 1863 Conradia doliaris is a species of small sea snail or micromollusc, a marine gastropod mollusc in the family Conradiidae.

[1] (Original description by Arthur Adams) The height of the shell attains 2.5 mm.

The dirty white shell has a turbinate shape with 4½ whorls and a profound umbilicus.

The very thin shell contains distant transverse ridges, and the interstices are neatly cancellated.

The aperture is nearly circular, and the sutures are deeply channeled.