PLATE VI. 



MAY-FLIES. 



FIG. PAGE 



1. Ameletus ornatus $ sub-imago 39 



2. ,, ,, $ sub-imago 39 



3. ,, „ nymph (magnified) 38 



4. Atalopldebia dentata $ imago 31 



5. ,, ,, nymph (magnified) 32 



6. ,, ,, 5 sub-imago 32 



8. Coloburiscits humeralis $ imago 30 



9. ,, ,, J imago 36 



11. ,, ,, 2 sub-imago 37 



10. ,, ,, nymph (magnified) 36 



STONE-FLY. 



7. Perla cyrene 6 



