(Φιλόμηλος), a son of Iasion and Demeter, and brother of Plutos, is said to have invented the chariot when Boötes was placed among the stars by his mother. (Hygin. Poet. Astr. 2.4.)
[L.S]306
A Dictionary of Greek and Roman biography and mythology
Smith, William
A Dictionary of Greek and Roman biography and mythology. William Smith, LLD, ed. 1890