Kurtziella rhysa is a species of sea snail, a marine gastropod mollusk in the family Mangeliidae.

Slightly above the middle of the whorls is the strong angulation, to which the prominence of the ribs originating at this point gives great additional sharpness and distinctness.

The apex is small, roundedly sharp, consisting of 3¼ carinated, but otherwise perfectly smooth, whorls, which form a short compact little cone, of which the extreme tip is a little obliquely flattened down on one side.

The greatest breadth is at the keel, below which the whorls begin faintly, and with a very slightly convex profile, to contract into the inferior suture.

The last contracts rather rapidly into a short conical base, running out into a narrow, straight, somewhat one-sided, and not very long snout.

It is convex in its sweep to the edge of the siphonal canal, from which it runs directly and obliquely to the rounded and open point of the columella.

In leaving the body it retreats at once to the right to form the rounded sinus, which has an excessively short upper side, but becomes large (though hardly deep) from the great forward winglike sweep of its lower margin, whose course is quite independent of the ribs.