FIELD BOOK OF PONDS AND STREAMS 



Fig. 167. — Nymph and adult of Lestes jnceqiialis. 



Hetaerina americana. — The adults (Fig. 166) have narrow 

 transparent wings, ver}^ different from the dark spoon- shaped 

 ones of the preceding genus, Agrio7i (Calopteryx) (Fig. 165), 

 and the males can be distinguished from other damselfiies by 



Fig. 168. — Nymph and adult of Argia violacea. 



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