This poem opens with Hermes agreeing to transform the title character from a serpent to a woman.  
This poem is based on a brief passage in Burton's The Anatomy of Melancholy.  After the title character's transformation, she meets her love in "the calm twilight of Platonic shades."  A scholar, he falls instantly in love with her, and they live happily in her "purple-lined palace of sweet sin."  However, Lycius' friend Apollonius reveals her true serpent nature and she disappears, leaving Lycius to die.  This poem opens with Hermes agreeing to transform the title character from a serpent to a woman.  FTP, identify this John Keats poem named for the mythological creature that was half-woman, half-snake.
This poem is based on a brief passage in Burton's The Anatomy of Melancholy.  
Lamia