I. A Greek astronomer, supposed to have flourished in the 4th century of our era, and to be the author of a treatise on the sphere, a fragment of which is extant.

II. A native of Alexandria, who wrote a Greek romance entitled "The Story of Leucippe and Clitophon," which has come down to us. He probably wrote near the close of the 5th century. By some biographers these two writers are considered identical.