1. A Boeotian, from whom Mount Messapion, on the coast of Boeotia, and Messapia (also called Iapygia), in southern Italy, were believed to have derived their names. (Strab. ix. p. 405.)

2. A son of Neptune (Poseidon) and king of Etruria, who was invulnerable, and a famous tamer of horses. (Virg. Aen. vii. 691, &c., with the note of Servius.)