Alcithoe fusus is a species of medium-sized sea snail, a marine gastropod mollusc in the family Volutidae, the volutes.

(Described as Fulguraria (Alcithoe) hedleyi Murdoch & Suter, 1906) Shell: Elongate-fusiform, with a rather long, acuminate spire and costate structure.

Sculpture: The protoconch features one or two spiral threads, while the subsequent spire whorls are distantly longitudinally costate.

The outer lip forms a gentle curve, is nearly straight, thickened and rounded above, and thinner near the base, remaining smooth and not expanded.

The columella is slightly excavated near the middle and features four almost equidistant, very oblique strong plaits of nearly equal size.