Explanation of Plate i. 



Fig. 

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Fig. 

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Fig- 

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 Fie. 



lo. 

 1 1 



12. 



13- 



14. 



15- 

 '7- 



Epitheca yamaskanensis Frovancher. 

 $ Anal appendages, from above. 

 $ Anal appendages, side view. 

 9 Anal appendages, from above. 

 9 Anal appendages, side view. 

 $ Genitals in the second segment. 

 9 Vulva, from below. 



Epitheca obsoleta Say. {polysiicta Burm.) 

 $ Anal appendages, from above. (Burm.) 

 ^ Anal appendages, side view. (Burm.) 

 9 Vulva, from below. (Say.) 

 Cordulia lintneri Hagen. 

 $ Between anal appendages, from above. 

 $ Anal appendages, from above. 

 $ Anal appendages, side view. 

 $ Superior anal appendages, from above. 

 9 Anal appendages, from above. 

 9 Vulva, from above. 

 — Head, from above. 

 $ Base of wing. 

 All the figures are drawn from the types. 



