Solariella mutabilis Schepman, 1908 Spectamen mutabile is a species of sea snail, a marine gastropod mollusk in the family Solariellidae.

This concerns the body whorl; on the upper ones, the finer sculpture disappears gradually.

The lower whorls have a distinct, nearly horizontal space, from the suture towards the upper keel, with small, radiating plicae, corresponding to the nodules.

The spaces above and below the peripheral keel are slightly concave, the suture laying by this construction in a sort of canal.

The umbilicus is funnel-shaped, rather large, pervious, its wall with raised, concentric and radiating striae, more or less beade.