16 DRAGONFLIES OF OHIO. 



a narrow humeral stripe (sides parallel) the p''0- 

 thoracic borders, mid-dorsal carina (obscure in some ) 

 the sides of the thorax and abdomen and stripes on the 

 femora and tibiae yellowish white. There are also 

 whitish apical and basal interrupted rings on 2-7 of 

 the abdomen and a trace of a mid-dorsal white line, 

 segments 9 and 10, rear of head and under parts of 

 thorax in the male are pruinose. The wings are hya- 

 line, pterostigma reddish brown, covering two cells. 



The male abdominal appendages are forcipate, 

 longer than 10, reddish on the outside basally, otherwise 

 black, denticulate externally, apex somewhat swollen ; 

 on the inner surface there is a strong pointed proximal 

 tooth, followed by a sinus, this followed by a blade, the 

 inner edge of which bears sharp teeth. The short in- 

 ferior appendages are black with their obtuse apices 

 turned towards the mid-line. 



The female differs in having the mid-dorsal line of 

 abdomen plainer than in the male ; the humeral stripes 

 wider and the pterostigma lighter. The slender abdom- 

 inal appendages are light without and black within ; the 

 valves are light, with tips and lower edge blackish, 

 serrate and narrow. 



Congener probably occurs in the greater part of 

 the state. It has been taken at Columbus in the fall 

 only, flying well into October. 



Lestes unguiculata, Hagen. 



Length: of abdomen d" 28 mm., ? 27 mm.; of 

 hind wing d" 19 mm., ? 21 mm. 



The color of the head and thorax blackish bronze 

 above, dorsum of the abomen metallic green; the 

 labrum, gense, under parts of head and thorax, greater 

 part of the sides of the latter, and humeral stripe 

 yellowish. The wings are hyaline, pterostigma brown 

 with the ends whitish ; the coxge are light, the femora 

 and tibiae, striped with light and black, tarsi black. 



