76 DRAGONFLIES OF OHIO. 



the superiors, straight, prominent at the outer distal 

 angle and bearing a forward curving tooth. 



The female is colored similar to the male. 



Taken at Orwell, Ashtabula County, June 1895. 



FIFTH SUB-FAMILY. 

 ^ESCHNIN^. 



The members of this sub-family found in Ohio are 

 medium sized to very large insects. It includes some of 

 the most hardy forms, being the first to appear on the 

 wing in spring and the last to disappear in the fall. 

 The eyes are contiguous for nearly their entire width in 

 both sexes, wings are long and broad and the anal 

 angles of the hind pair are rounded in the female and 

 prominent in the male (except Anax). As a usual thing 

 they do not spend so much time flying over the water 

 as some of the preceding forms. They are common 

 about fields and sunny places in woodlands, and are 

 continually busy catching flies and other small insects 

 for food. 



The female is attended by the male much of the 

 time and it is a common thing to see pairs take long 

 excursions over the water, flying three or four feet 

 above its surface. The female seems to prefer to ovi- 

 posit in stagnant pools and ponds where the surface is 

 covered by duck weed and other aquatic plants. 



The genera may be separated as follows ; 



1. Triangle once crossed Gompbseschna 



Triangle with more than one transversal , 2 



2. Subnodal sector furcate in the hind wings 3 



Subnodal sector not furcate in the hind wings 5 



3. Anal angle of male rounded, thorax uniform green Anax 



Anal angle of hind wing of male acute, thorax brown, banded 

 with green 4 



