2oo Cincinnati Society of Natural History. 



5. Lestes uncata Kirby. 



Sandy Beach, near Lakeside, July 4; Cedar Point (San- 

 dusky), July 12, not uncommon ; Oberlin (Lynds Jones). At 

 Corunna, Mich., I found Uncata next to Rectangularis^ the 

 most abundant Lestes, from July 15 to August 15, 1894. 



6. Lestes disjuncta Selys. 



A few examples have been taken at Columbus in August ; 

 several at Cedar Point June 30, and others at Sandy Beach 

 July 9- 



The copulation of different species of Odonata or, at least, 

 the prolonged flight of a male of one species united with the 

 female of another, has been noticed from time to time by 

 observers. At the place and date last mentioned, I took such 

 a couple, consisting of a male Disjuncta and a female of Vig- 

 ilax. The disparity in size made the combination quite 

 striking.* 



7. Lestes forcipata Ramb. 



Taken at Cedar Point (Sandusky), June 30, 1894, by Will- 

 iam E. Kellicott. Not yet found in any abundance. 



8. Lestes rectangularis Say. 



This is, by far, our most abundant and wide-spread Lestes. 

 I have taken it from June 16 to September 15 at Columbus. 



I once saw a female resting on a bullrush, just above the 

 water, when a male approached she quickly slipped down 

 the plant beneath the water, where she remained for perhaps 

 a minute. The male did not follow her. 



9. Lestes vigilax Selys. 



This fine species has been taken, thus far, at one station 

 only. At Sandy Beach, July 4 and 9, 1894, it was very abun- 



* For a still more heterogeneous union see under Enallagma civile. 



