360 ENTOMOLOGICAL NEWS. [Dec. , 'o6 



males ; common about slough north of Waterloo and the one 

 near mouth of Elk Run. 



Ischnura verticalis Say. Twenty-eight males; 21 females; 

 abundant about the sloughs at Elk Run and north of Water- 

 loo. This was one of the earliest species out. A few individ- 

 uals were seen at least two weeks before other species, except 

 Anax Junius, appeared in any numbers. 



Anomalagrion hastatum Say. One male. 



Gomphus fraternus Say. Two females. 



Gomphus cornutus Tough. One female in poor condition, 

 not fit for description, probably belongs here though the 

 female has not been described. 



Gomphus sp. f Two females. These are teneral, and Mr. 

 Williamson hesitates to give them a specific name. 



Anax Junius Drury. Two males ; 2 females ; common about 

 woods and slough north of Waterloo. One of the earliest, 

 species out in the spring. As many were seen patroling the 

 open woods as about the water. 



NasicBSchna pentacantha Rambur. A male and a female from 

 slough north of Waterloo. 



Macromia illinoiensis Walsh. Three males and one female, 

 from slough north of Waterloo. 



Tetragoneuria cynosura Say. Nine males, three females ; 

 taken late in the afternoon along the bank over the water in 

 the shade near the edge of Waterloo. 



Epicordulia princeps Hagen. Fifteen males, 22 females ; 

 found in great numbers at north end of slough at Waterloo. 

 They were perched lengthwise on branches and twigs in the 

 sun. Frequently several would be strung along on a drooping 

 twig close together so that three to five could be taken with a 

 single stroke of the net. All were recently emerged. 



Leucorhinia intacta Hagen. Five males, 2 females. 



Mesothemis simplicicollis Say. A male and a female. 



Pachydiplax longipennis Burmeister. Nineteen males, seven 

 females ; very abundant about slough north of Waterloo. 

 Found perched above the water with wings drooped, getting 

 the full benefit of the sun. 



Libellula basalis Say. Scarce ; two males, taken from weeds 



