Plate XXIV. 



Photo. F. N. Clark. 



Comparative view of front leg of s of Plebeius argus and 

 of p. argyrognomon x 35. 



1. Plebeius argus (showing tibial spine). 2. Plebeius argyrognomon. 



A Natural History of the British Butterflies, etc., 1909. 



[To face p. 206.] 



