18 DRAGONFLIES OF OHIO. 



The female has the sides of the thorax clear yellow- 

 ish and less black on the abdomen ; the appendages are 

 light and the valves black with light shade above ; the 

 basal half of abdominal ring 1 is yellow, and the basal 

 rings on 2-7 are interrupted ( not in the male ). 



The superior male abdominal appendages are much 

 like those of unguiculata, while the inferiors differ 

 totally, as they are straight with a broad terminal ex- 

 pansion, making them securiform when seen from 

 above. 



This species occurs in most parts of the state and 

 in abundance ; it appears during mid-summer. 



Lestes disjuncta, Selys. 



Length : of abdomen cT 30 mm., 9 28 mm.; of hind 

 wing cT 20 mm., of ? 22 mm. 



Head and thorax blackish brown, abdomen metallic 

 green with the last three segments blackish. The 

 following parts are yellow : lips, gense, anteclypeus, 

 mid dorsal carina, humeral stripes, sides of thorax, 

 femora interiorly and tibse exteriorly, sides of abdomi- 

 nal rings 1-7, and narrow, basal, interrupted rings on 

 2-7 of the female and young males, not discernible in 

 adult males. The sides of the metathorax of the 

 females is blackish, and in the males there is at least a 

 dark wash at the second lateral suture. The humeral 

 is wider in the female, and in both sexes it is narrower 

 above. 



The superior male abdominal appendages are black, 

 forcipate, rather coarsly denticulate without, and with 

 two equal acute teeth within, the edge of the blade-like 

 piece between them is straight and serrate ; the inferi- 

 ors are reddish brown, straight, somewhat laterally ex- 

 panded distally, and concave on the upper side or spoon 

 shaped. The female appendages are of the usual shape, 

 blackish within and at apex ; the valves are light with a 

 dark shade through the middle. 



