Aischna. 193 



Distinction from iE. cyanea. 



To difterentiate this species from ^-E. cyauca it will 

 be sufficient to notice the following three points: (i) The 

 greater length of the pterostigma ; ('2; the golden 

 costa ; ^3) the divided dorsal blue spots on segments 

 9 and 10. 



Oviposition. 



On one occasion late in August a long tim.e was 

 given to trying to catch a female which was continualh' 

 clipping the tip of her abdomen below the surface of a 

 pond on Ockham Common, evidently by this means 

 depositing eggs, though in what manner was not seen, 

 in the shallow water, about ift. deep, in a corner of 

 the pond containing a bed of dry Equisctuin. On 

 approaching almost within reach she moved off a few 

 yards and recommenced ovipositing as before. On 

 returning later she (or possibly another) was still there, 

 but soon fell a prey to the net as she was resting 

 apparenth' with her wings on the surface of the \\ater 

 and her body submerged. A week or two later, in 

 September, on Esher Common another was taken while 

 ovipositing by repeatedly dipping her abdomen in the 

 water in a similar manner. 



Egg- 

 Length r5mm. ; breadth nearly or quite a quarter of 

 the length ; c)'lindrical, inclined to spindle-shaped, with 

 the tip and pedicel lighter, or more transparent, than 

 the bod}'. [Extracted from the dead body of a female 



O 



