INSECTS 



375 



Fig. 228,— Net- winged Insects {NeJtroptera) 



I, la, lb. Stages of common May- Fly [Ephemera vulgatd] ; 2, another species of May-Fly [Palin- 

 genia horaria); 3, sa, adult and larva of Horse-Stinger [Libelhda depressa) ; 4, 5, Common Scorpion-Fly 

 [Panorpa comviunis); 6, 6a, Alder-Fly {Sialis lutan'a); 7, Large Caddis- Fly Pkryganea grandis)\ 

 8, Diamond-spotted Caddis- Fly {Limnopkilus rkombicus). 



