KELLICOTT. 73 



more or less of the space between them brown, re- 

 mainder of the thorax and all the coxae yellow; legs 

 and feet, all the tibiss and tarsi, front femora except an 

 inferior, yellow vitta on each, middle femora and distal 

 part of hind femora, black ; the hind femora have dark 

 lines laterally and superiorly for their whole length ; 

 costa yellowish, pterostigma light brown covering four 

 cells. Abdomen; dorsal line present on 1-6, sides of 1-3, 

 basal, transverse band on 4-6, all of segments 7-10, 

 yellow; segments 7-10 are often largely suffused with 

 brown above and the extreme ventral edge is always 

 brown in fully matured specimens. Superior appenda- 

 ges yellow, in form resembling those of spinosus; in- 

 feriors from above gradually divaricate, more spread- 

 ing than the superiors, wide at base and gradually 

 narrowed; from side view yellow at base, black distally, 

 shorter than the superiors, suddenly turned up at apex 

 and produced above into an acute projection. 



The female differs in its larger size and stouter ab- 

 domen and in the occiput being rather suddenly promi- 

 nent at the middle. This prominence does not form a 

 spine as in spinosus but simply an obtuse angle. The 

 vulvar lamina is nearly a third as long as 9, triangular 

 in general outline, the apex is divided ; the two parts 

 divaricate, acuminate, and turned outward at the tips. 



The species is common in north western Ohio along 

 the Maumee River and its tributaries, and the Ohio 

 Canal. I have never seen this species fly up into trees 

 during copulation as is stated regarding spinosus. 

 Both male and female fly along the bank with a swift, 

 regular flight, coming to rest on bare spots close to the 

 water where copulation takes place. The female ovi- 

 posits similar to Libellula. The queer thing about this 

 gomphid is that females are as often taken as males. 



