Amalda marginata is a species of sea snail, a marine gastropod mollusk in the family Ancillariidae.

(Original description in French) It is an oval, rounded shell with a pointed, transversely keeled spire.

It is whitish with a smooth back, but its whorls are decorated near their suture with an interrupted reddish band.

[2] (Described as Baryspira (Alocospira) dyspetes) The shell is medium-sized with an open aperture and a slightly swollen shape.

The shell is primarily white, with a yellow band just behind the suture and a similarly colored anterior canal.