Benevolent deity in Greek mythology, the "good spirit" of vineyards and cornfields. According to Aristophanes, Agathodaemon was honored by drinking a cup of wine at the end of a meal. He was represented pictorially in the form of a serpent or sometimes as a young man holding a horn of plenty, a bowl, and ears of corn. Winged serpents were also venerated by the ancient Egyptians, Chinese, and other peoples.
(See also Dragon )