I IO 



Cincinnati Society of Natural History. 



its inner margin and remote from the apex ; the genital lobe and 

 the anal appendages agree. There is an extra transverse carina on 

 4, which Dr. Hagen has not mentioned as present in madida. 



NOTES ON CERTAIN SPECIES REFERRED TO IN PART I. 



1. Lestes inequalis was taken by Mr. E. E. Bogue, June, 1895, 

 at Orwell, and by the writer at Reservoir Park in June. It probably 

 occurs throughout the northern part of the state. 



L. vigilax has been taken the past season over about the same 

 range. 



2. Argia putrida ranks with Anax junius and Ischnura verticalis 

 in season range, viz : — from May to October. At Lakeside it was 

 observed flying and pairing during a rainy afternoon. The following 

 observations were made the same day on its habit of ovipositing under 

 water. Four pairs were noted on a timber of the dock; they were 

 from barely covered to six inches under water; the following notes 

 were made at the time. 



Pair i. c? abandoned 9, emerged and flew away after five 

 minutes, 9 remained one hour. 



Pair 2. abandoned 9 m seven minutes, 9 remained fifty- 

 five minutes; after exposure to the air for a short time she returned 

 beneath the water for fifteen minutes. 



Pair 3. c? remained submerged twenty minutes, 9 thirty; she 

 flashed her wings and immediately returned for twenty five minutes. 



Pair 4. They were disturbed, emerged and flew away together. 



Pair 5. They were seen to alight on the dock just above the 

 water and slowly back down until they were covered. 



3. Nehalennia irene has been taken the past summer at Colum- 

 bus, June 5, and at Springfield, July 6; in every case taken by reed- 

 grown ponds or streams fed by clear spring water. N. gracilis 

 recently described by A. P. Morse and hitherto confounded with 

 irene does not appear among numerous examples from different parts 

 of Ohio and Michigan. 



4. Enallagma Fischeri was taken at Georgesville, June 26, 

 Bucyrus, June 28, Springfield, July 6; one male was seen in the 

 collection of Cornell University presumably captured at Ithaca. 



Under No. 71, E. carunadaium, the extreme abundance at Grand 

 Reservoir was mentioned, singularly no other species, except perhaps, 

 Perithemis domitia was at all common. In one instance a chain of 



