OF WASHINGTON. 161 



Mr. Heidemann presented the following paper : 



NOTES ON NORTH AMERICAN ARADID^E, WITH DESCRIP 

 TIONS OF TWO NEW SPECIES. 



By OTTO HEIDEMANN. 



Dr. A. D. Hopkins, who is in charge of the forest insect inves 

 tigations of the Department of Agriculture, turned over to me for 

 identification a lot of hemipterous insects belonging to the family 

 Aradidae. Some of these were collected by him on his trips to 

 Florida and Texas, but the greater part of them by his assistant, 

 Mr. W. F. Fiske, in North Carolina and Georgia during the year 

 1903. The collection represents four genera with thirteen well- 

 known species. In addition there are two new species of the 

 genera Neuroctenus and Aneurus.* 



Subfamily 



Aradus acutus Say. 



Two specimens. A female taken at Tryon, N. C., April 17, 

 1903, beneath the bark of a rotten oak log; and a male, found at 

 Everett, Ga., April 27, 1903, under dry bark of small dead oak. 



On these specimens the cinereous spots on the dorsal part of 

 abdomen show* very distinctly. The species is not uncommon, 

 frequently being found also around Washington, D. C. 



Aradus similis Say. 



Two specimens from Tryon, N. C., December 14 and April 

 9, 1903, beneath bark of elm, girdled last spring; also under 

 bark of dead maple. This common species varies considerably 

 in size. Even dwarf specimens are found. 



Aradus crenatus Say. 



Six specimens, males and females. All came from Tryon, 

 N. C.. April 4, 7, 17, 1903. Found beneath bark of tulip trees 

 (Liriodcndrori}* killed last summer ; under loose bark of hickory 

 (log dead one year), and beneath bark of maple trees, girdled 

 one year. I once took at Cabin John, Md., numerous specimens 

 of nymphs and adults, by sifting the decaying wood of an old 

 tree stump. 



Aradus niger Stal. 



Three specimens, male and female, winged form. They were 

 collected by Dr. A. D. Hopkins, at Kirbyville, Texas, November 

 17, 1902, under dead bark of long-leaf pine (Pinus palustris). 

 This species was for a long time unrecognized, but specimens 



*The notes on mode of occurrence are mostly taken from field notes 

 furnished me by Dr. A. D. Hopkins. 



