2 adjectives to describe mythus

It is true that to the Roman poets of the Augustan period we owe the conception of the golden age, but it remained with them rather a philosophical mythus than the dream of an idyllic poet.

Deep conversation with any river readily interprets to us that venerable mythus which connects Eden with the four rivers of the world; as if water must flow where man is chiefly blest.

2 adjectives to describe  mythus