bold = Main text
   Book,  Verse      grey = Comment text

 1    III,   476    |          Unkindled; and that snakes in frequent folds~ ~
 2     VI,   786    |      Bristling with heads of snakes his triple head,~ ~
 3     IX,   472    |           And not a comrade. Snakes, thirst, burning sand~ ~
 4     IX,   716    | space sufficed. By thirsting snakes~ ~
 5     IX,   769    | turned to rocks; and when on snakes of old~ ~
 6     IX,   801    |       With coils of writhing snakes the features dead.~ ~
 7     IX,   821(23)|            This catalogue of snakes is alluded to in Dante's "
 8     IX,   838    |     Theban 24 marble; horned snakes~ ~
 9     IX,  1004    |                  She gave to snakes, and to the barren fields~ ~
10     IX,  1081    |                    Deadly to snakes, a pungent smoke arose;~ ~