PLATE XI. 



1 r 



TWO-WINGED FLIES. 



No. 1. 



4-. 



2. 



3. 6. 



I ' ' i i i i i i i i i I i i i i -r-r4 2 Inches 



1. St Marks Fly. 2 Gnat (.magnified). 3. Herb Cranefly (reduced). 

 4. Yellow Gadfly. 5. Common Cleg. 6. Leptis scolopacea. 



