PLATE III. 



DKAGONFLIES. 



FIG. PAGE 



1. Somatochlora smithii ? 15 



2. „ ,, nymph 16 



6. ,, ,, head of nyruph showing " mask " 



(much magnified) 1G 



4. Lestes colensonis $ 19 



5. „ „ ? 19 



3. Head of nymph of Xanthac/rion zealandicum showing 



"mask" (much magnified) 20 



