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"