Plate XX. 



\ 



% 



m 



Photo. F. N. Clark. 



Comparative vie^ of \\<iu,.\ky appendages of the genera Plebeius and 



A.GRIADE8. 



1. Plebeius arsusx 20. 2. Plebeius arous (lateral) x 25. 



3. AtiKIM'KS CORIDONX16. 



.1 Natural History of the British Butterflies, etc., 1909. [To face p. 155.1 



