Explanation of Plate L. 



(To be bound facing Plate L.) 



Ancillary appendages of species of Plebeids. 



Fig. 1. Dorsum of Plebeius argus (aegon) x 30. 



,, 2. „ of P. argyrognomonx 30. 



,, 3. End of clasp of P. argyrognomonx 100. 



,, 4. „ ,, ,, ,, P. scudderiixQO. 



,, 5. Dorsum of P. rutilans x 20. 



,, 6. End of clasp of P. rutilans x 60. 



,, 7. Dorsum of P. hyrcana x 20. 



,, 8. End of clasp of P. hyrcana x 60. 



, , 9. Dorsum of P. pheres x 20. 



,, 10. End of clasp of P. pheres x 60. 



,, 11. Dorsum of P. haberhaueri x 20. 



,, 12. End of clasp of P. haberhaueri x 60. 



,, 13. Dorsum of P. sieversi x 20. 



,, 14. End of clasp of P. sieversi x 60. 



N.B. — Note, in comparing, the greater enlargement of Fig. 3, to show the 

 tine teeth, and that Figs. 1 and 2 are enlarged 1| times more than Figs. 5, 7. 9, 

 11 and 13. 



Plebeius cleobis and P. eversmanni are very similar to P. argyrognomon. P. 

 scudderii, P. melissa, and P. zephyrus (lycidas) have dorsa somewhat like that of 

 P. argus (aegon), but ends of clasps similar to those of the P. argyrognomon group. 

 No species met with, other than those figured, have the end of the clasps 

 more definitely intermediate between those of P. argus and P. argyrognomon. All 

 these species (with very various macroscopic characters) are rather intermediate 

 between P. argus (aegon) and P. argyrognomon than outside them, making it 

 difficult to believe that the general similarity of these two species shows close 

 relationship and is not rather due to approach from similar environment or other 

 cause. Except P. lycidas they are the only European species of the genus, the 

 only generally distributed species. 



Plebeius acmon and some others are apparently outside the limits marked by 

 P. argus and P. argyrognomon, and there are, it need hardly he said, a few species 

 that there has not been an opportunity of examining. 



T.A.C. 



