80 DRAGONFLIES OF OHIO. 



Taken at Columbus June 13. 



This species differs from any other species of the 

 sub-family in our fauna in the form of the abdomen. 

 The widening again after the constriction at three is 

 not present, but a very gradual narrowing continues 

 from thence to apex. 



FONSCOLOMBIA, Selys. 



The single representative of this genus is quite 

 common in Ohio. It flies along streams where fallen 

 trees and drift-wood .abound. Its glossy wings cor- 

 respond so closely to the water that it is seen with 

 difficulty. The female has been observed resting on the 

 trunks and branches of trees and shrubs, sometimes 

 twenty feet or more above the ground. This is one of 

 the species which the collector is not likely to procure 

 until he understands its habits. After that he considers 

 it a common form. 



Fonscolotnbia vinosa, Say. 



Length of abdomen cT 50 ? 50. hind wing c? 42 9 

 44. 



Male; color reddish brown, darker in fully matured 

 specimens. Two conspicuous yellow spots on each 

 side of thorax; wings slightly brown at base, veins 

 reddish, pterostigma yellow. Abdomen; mid-dorsal 

 carina present on 2—8, auricles on 2 yellow, two or 

 three small yellow spots usually present on sides of 4— 

 8; superior appendages as long as 9+10, widest 

 beyond the middle, narrowed from thence towards 

 apex which is bluntly angular, a longitudinal, median 

 thickening present. 



Inferior appendages one third as long, }'ellow, con- 

 ical, notched and brown at apex. 



The female has the hind wing wider and the anal 

 angle rounded. 



Taken in all sections of Ohio in August and 

 September. 



