Waikura is a genus of very small sea snails, pyramidellid gastropod mollusks, or micromollusks.

[1] The original description by Marwick (1931) says that the genus consists of small shells that are subconical with a telescopic spire.

The sculpture consists of tubercles on the shoulders that extends axially for a short distance.

The aperture is subrhombic with a highly sinuous outer lip that is convex below.

As is true of most members of the Pyramidellidae sensu lato, they are probably ectoparasites.