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

[1] The minute, narrowly umbilicate, rather solid shell has a turbinate shape.

The five whorls are rounded, the first three transversely ribbed and longitudinally striated.

The circular aperture has a channelled angular projection in front.

The outer lip is simple, the margin acute.