EXPLANATION OF THE PLATES. 
[a, sideview ; 4, labium ; ¢, appendages ; d, processes above the base of first pair of legs ; 
e, front view of the head. ] 
PLATE I. 
Fic. 1. Anax formosus. 
“« 2. Anax Junius. 
“3. Episeschna heros. 
“4,  Aaschna species. No. 19, 
PLATE II. 
Fic. 1. Aschna grandis. 
« 2. Aischna eremitica. 
«© 3. Neuraeschna vinosa. 
“4, Gompheschna fureillata. 
PLATE III. 
Fre. 1. Aschna constricta. 
“2. Gynacantha species. No. 1. 
“ 3. Species. No. 24. 
PLATE IV. 
Fie. 1. Aschna juncea. 
« 2, Alschna species. No. 18. 
« 3. Adschna cyanea. 
PLATE V. 
Fic. 1. Brachytron pratense. 
“2. Aischna mixta. 
“ 3. AXschna affinis. 
“ 4, AXschna rufescens. 
“ 5, Aschna viridis. 
