The quotation from the passage that contains an allusion to Greek mythology is:
“Had a wanderer bewildered in the melancholy forest heard their mirth and stolen a half-affrighted glance, he might have fancied them the crew of Comus, some already transformed to brutes, some midway between man and beast, and the others rioting in the flow of tipsy jollity that foreran the change . . .”
This alludes to Comus, a figure from Greek mythology who is associated with revelry and the celebration of excess.