1 60 Explanation of the Plates. 



Fig. 1 8. Plebeius Agestis (Alexis, Scop.), German winter 

 form. 



Fig. 19. P. Agestis (Alexis, Scop.), German summer 

 form. 



Fig. 20. P. Agestis (Alexis, Scop.), Italian summer 

 form. (The chief difference between figs. 19 and 20 lies 

 on the under-side, which could not be here represented.) 



Fig. 21. Polyommatus Phlaas, winter form, from 

 Sardinia ; the German winter and summer generations 

 are perfectly similar. 



Fig. 22. P. Phlceas, summer form, from Genoa. 



Fig. 23. Pararga ^Egeria, from Freiburg, Baden. 



Fig. 24. P. Meione, southern climatic form of 

 from Sardinia. 



END OF PART I. 



