34 THE BLUE-WINGED OLIVE 



in clouds on warm summer afternoons. C. 

 halterata is somewhat larger, and the angler 

 may see the sub-imaginal shucks in thousands 

 attached to walls and fences bordering the 

 river. The specimens in my collection were 

 obtained for me by a keeper at Uxbridge in 

 the very early hours of the morning. 



Family . . EPHEMERID.E 

 Genus . . Ephemerella 

 Species . . igntia 



PLATE V 



Blue- winged A very useful fly to the dry-fly fisherman is 

 the blue-winged olive (Ephemerella ignita). It 

 is one of the most abundant of the Ephemerida 

 on the south-country chalk-streams, and seems 

 to thrive equally well in fast or sluggish waters. 

 It appears on the Test towards the end of June, 

 but on the Kennet and some of its tributaries 

 much earlier in the season. I have seen a 

 capital hatch on the Lambourne as early as 

 mid-April ; in the autumn it is a favourite food 

 of swifts and swallows at the time of migration 

 on the Continent. 



sherry The imago is known as the sherry spinner, 



Der ' and the female is noticeable, owing to its curious 

 method of carrying its eggs in a round ball 

 tucked away under the abdomen, and held there 

 in position by the last two or three segments, 

 turned down over a pair of projecting lobes. 

 Mr. Halford, who has likened the flight to that 



