Cythara maculata Brazier, 1876 Eucithara alacris is a small sea snail, a marine gastropod mollusk in the family Mangeliidae.

Its colour is white, ornamented with four to six pale orange bands, appearing only in the interstices, not on the ribs.

The radial ribs are well developed, projecting as an angle on the shoulder, continuing from suture to base, and amounting to ten on the body whorl.

Gradually they vanish, till on the middle of the body whorl the surface seems smooth to the eye, and only a few engraved spirals can be found with a lens.

The slight varix encloses a small sinus, and extends in a narrow free edge.