KELLICOTT. 97 



Legs black, wings black on basal half to third, beyond 

 this white, apical third clearly transparent. 



The female usually lacks the white on the wings 

 and the black at base is shorter and often reduced, es- 

 pecially on the fore wings, so that it has a smoky ap- 

 pearance. Apex of the wings often fuscous. 



The species is very common and is usually the first 

 species to attract the attention of the amateur col- 

 lector. Like the other species of the genus, it prefers 

 the vicinity of stagnant ponds where the sun's rays 

 are unobstructed. 



Libellula attripennis, Burmeister. 



Length: of abdomen d 36, 9 34; hind wing cT 38, 

 9 39. 



Male, colors yellowish to brownish. Front in fully 

 matured specimens shining brown, variable according 

 to the stage of coloration of the specimen. In teneral 

 specimens the mid-dorsal thoracic stripe is present, 

 later this is obscured. The dorsal black stripe on the 

 abdomen is apparently constant. Wings with a 

 yellowish tinge, more prominent along the front mar- 

 gin, pterostigma yellowish, bounded by black veins. 



The female is similar to the male, but has the apex 

 of the wings smoky. 



This species is quite distinct from other Ohio forms, 

 but appears to be very close to plumbea of the eastern 

 states. It may be separated from that species however 

 by the absence of a brown, basal streak between sub- 

 costal and median veins. 



Hagen reported this species from Ohio, but it has 

 not been taken in recent years, until the past summer 

 when specimens -were procured at Cincinnati. It is 

 probably a coast species by preference. 



Libellula cyanea, Fabricius. 

 Length: of abdomen d 30, 9 27; hind wing d 35, 

 9 35. 



