Miralda (Oscilla) A. Adams, 1861 Oscilla is a genus of very small sea snails, minute marine gastropod mollusks or micromollusks.

This genus is currently placed in the subfamily Chrysallidinae of the family Pyramidellidae.

[2] These marine gastropods have shells with intorted protoconchs.

As is true of most members of the Pyramidellidae sensu lato, they are likely to be ectoparasites.

Oscilla jocosa may possibly be a parasite on Trochus erithreus (Mienis 2003).