Taranis nexilis is a species of sea snail, a marine gastropod mollusk in the family Raphitomidae.

(Original description) The minute, fusiform shell is cancellated.

The spire-whorls show a prominent spiral keel, crossed by rather oblique and rather distant spiral threads, forming an obtuse angle on the keel.

These are crossed by rather distant longitudinal lines which form a very obtuse angle on the first spiral rib or keel.

The aperture is less than half the length of the shell, rather constricted and angled behind.