ARIONIS HARPE. Arion's Harp is the constellation Lyra, lying in the northern hemisphere, partly in the Milky Way.
The learned eagle points out the constellation to the frightened dreamer as they fly by, HF II.1000-1006. Gower uses Arion's harping as a trope for peacemaking, Confessio Amantis, Prol. 1054--1088. [Orion]
Arionis is the Latin genitive singular of Arion.