The daughter of the Athenian king Erichthonius. She was the consort of Cephalus. When she fled from Cephalus out of shame for breaking a vow, Artemis gave her the dog Laelaps, an animal destined to always catch its prey, and a magic dart that never missed its mark and which always returned on its own accord to the shooter. The goddess then sent her back to her husband.
- Pseudo-Apollodorus. The Library iii, 15.2.