The aim of this paperis the analysis of the meaning of the iconography of the month of September in Late Antique Roman illustrated calendars. This image alludes to the apotropaic ritual of the grape harvest done through the suspension of a lizard above bunches of grapes or containers of wine. The use of this image attests to the continuity of the Dionysian cult in Late Antiquity, even if only at a popular level, because of the definitive affirmation of Christianity. At the same time, the new religion included this iconographic pattern, which has acquired an eschatological meaning related to eternal life.