March, '02] entomological news. 67 



fifteen seconds. In the case also of Calopteryx niaadata, Argia 

 putrida, and Enallagma exsulans about the same time was re- 

 quired for the transfer of sperm. 



3. Hetaerina americana Fabricius. 



Alleghany County, July (J. L. Graf and D. A. Atkinson) ; 

 Couneaut I^ake, August 6, 1899 (D. A. Atkinson) ; Alle- 

 ghany County, August 8 and September 12, 1898 ; Ohio Pyle, 

 June 28, 1900. 



4. Lestes unguiculatns Hagen. 



Alleghany County, July, 1899 (D. A. Atkinson) : Turtle 

 Swamp, July 31 and Aug. 21, 1898 ; Couneaut Lake, August 



6, 1899 (D. A. Atkinson). 



5. Lestes forcipatus Rambur. 



Turtle Swamp, June 3, 1899 ; Boston, Alleghany County, 

 May 7, 1899 ; Pine Creek, May 21, 1899. 



6 Lestes rectangularis Say. 



Alleghany County, July (R. F. Foerster and D. A. Atkin- 

 son) ; Turtle Swamp, July 31, 1898, and June 3, 1899 ; Idle- 

 wild, July 10, 1900 (D. A. Atkinson), 



7. Argia putrida Hagen. 



Beaver County, May 25, 1899 ; Couneaut Lake, August 6, 

 1899 (D. A. Atkinson) ; Idlewild, July 10, 1900 (D. A. At- 

 kinson) ; Alleghany County, August 28, 1898, and July, 

 1899; Chartiers Creek, May 28, 1899; Ohio Pyle, June 18, 

 1899, and June 24, July i, 1900; Confluence, June 30, 1900. 

 A male of this species was taken at Ohio Pyle in the act of 

 devouring a large Mayfly. Males were seen on several occa- 

 sions in the act of filling the seminal vesicle. They do this 

 immediately after seizing the females. As has often been ob- 

 served pairs will congregate about the same spot for the females 

 to oviposit. On a frond ot the royal fern, Osmunda regalis, 

 which trailed in the waters of the Youghiogheny River at 

 Ohio Pyle, fourteen couples were counted at one time. The 

 pinnules of the fern were found to be literally packed with the 

 eggs (PI. Ill, fig. 2). The males are often drawn beneath the 



