48 University of Michigan 



habitats. In Eddy County it was found on shrubbery and 

 young trees in the margins of the woods bordering the Shey- 

 enne River; nymphs were more common here than aduUs. 

 At Fargo specimens were taken in company with Amblycorypha 

 oblongifoHa in a clump of shrubbery and tall nettles, in the 

 margins of an open grove near the banks of the Bois-de-Sioux 

 River. 



Amblycorypha oblongifoHa (DeGeer). — Fargo, Aug. 31, 

 1920, 2 females. 



Found with the preceding. Probably occurs at least through- 

 out the southeastern part of the state. 



COXOCEPHALINAE 



Orchelitnum gladiator Bruner. — Devils Lake, July i8-Aug. 

 8, 1919, 3 males; July 19-Aug. 15, 1920, 33 males, 24 females; 

 Stump Lake, July 25, 1920, 11 males, 9 females; Lake Upsi- 

 lon, Turtle Mountains, Aug. 2-6, 1920, 2 males; Bottineau, 

 Aug. I, 1920, 2 males; Fargo, Aug. 31, 1920, i male. 



Common in the Red River Valley and the Drift Prairie 

 Plains region in a variety of grassland habitats, especially 

 during the earlier part of the season. It occurred in large 

 numbers on the flats around the margins of Devils and Stump 

 lakes, and was extremely abundant in patches of pigweed 

 growing on a rocky island in Devils Lake; in these habitats 

 it was found in company with the next species. O. gladiator 

 was also common in tall herbaceous vegetation on dry soil 

 and in grassy and sedgy marshes in this region. 



Orchclimmn concinnum Scudder. — Devils Lake, Aug. 8, 

 1919, I male; July 21-Aug. 15, 1920, 32 males, 17 females. 



Although not taken elsewhere in the state, this species 

 proved to be very abundant in many places on the flats around 

 Devils Lake, where it occurred in company with the less 



