FURTHER NOTES ON THE ODONATA OF CONSTANTINOPLE. 81 



shrinkage in drying, but in the main the distinction pointed out 

 Mds good. On the distal side of the tubercle in the larger form 

 there are some short spines, variable in number, which I do not 

 trace in the eastern examples. Post-nodals in the latter : Fore- 

 wing, $ 9-11, ? 10 ; hind wing, $ 8-11, ? 9-11 (Selys gives 

 11-13 for L. viridis). Length of hind wing: $ 22-24 mm., 

 2 23-25*5 mm. (L. viridis from Zurich, $ 25-26 mm., ? 27- 

 28 mm.). 



Mr. Herbert Campion has been good enough to examine the 

 material of Lestes viridis in the British Museum, and he reports 

 that males from Belgium, Germany and Sicily agree with one 

 •another in having the distal tubercle well developed in the 

 superior appendages, while in one from Cyprus it is barely, if at 

 all, discernible, three males from Ostia, Italy, resembling the 



T'ig. 1. — Dorsal view of left superior appendage of Lestes viridis, $ , from Brusa ; 

 fig. 2, of $ from Zurich. 



last-mentioned. I had been disposed to consider Major Graves's 

 specimens as an eastern race or sub-species, but the Ostia 

 examples are a disturbing factor, and I leave the matter as it is 

 until more abundant material is forthcoming, especially from 

 Italy and the Balkan countries. 



Lestes viridis is an interesting species on account of the 

 circumstances connected with the hatching of the larvae from 

 the eggs, which are laid in the branches or twigs of willows and 

 Rhamnus overhanging the water, and which give rise to what 

 have been called "galls." Eis, in his " Ubersicht derimttel- 

 europaischen Lestes-Larven " (' Festschrift fur Zschoke,' Basel, 

 1920), gives characters for the determination of the larvsa of all 

 the European species of Lestinae except L. macrostigma. 



L. barbarus, Fabr.— Kuchiik Chekmeje Lake, <? , 31 . vili . 19. 



L. virens, Charp.— Kury Yalova, $ $ , 21-23 . vm . 19. 



