Plate XVIII. 



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Fig. 1. — Prothoeax of pupa of Polyommatus icarus, right side x 40. 



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Fig. 2. — Spiculated hairs on prothorax of pupa of Polyommatus icarus x 150. 

 Details of pupa of Polyommatus icarus. 

 A Natural History of the British Butterflies, etc., 1910. 



[To face p. 893.} 



