1 POLYOMMATUS ARION  (LARGE BLUE)

 2 POLYOMMATUS ALCON  (THE ALCON BLUE)

3 POLYOMMATUS CORYDON (CHALK HILL BLUE)

incisione in coloritura coeva / engraving  colored at time, " The Naturalist Library, London, 1860

cm. 16,27 x 10,63  inches 6,40" x 4,18"