22 University of Michigan 



specimen was attracted to a lighted sheet set up at night on 

 the shore of Devils Lake near the edge of the woods. 



Camnula pellucida (Scudderj. — Devils Lake, July 9- Aug. 26, 



1919, 6 males. 4 females; July 15-Aug. 17, 1920, 58 males, 25 

 females; Stump Lake, July 24. 1919, i male; July 24-25, 1920, 

 6 males; Sheyenne River, Eddy Co., July 25, 1919, i female; 

 Aug. 8, 1920, I male. 2 females ; Lake Upsilon, Turtle Moun- 

 tains. July 14-18, 1919. 12 males, 5 females; July 30- Aug. 4, 



1920, 1 1 males, 8 females ; Lake. Metagoshe, Turtle Mountains, 

 July 16, 1919, I male; Bottineau. July 16, 1919, 2 males; July 

 31-Aug. I. 1920, 3 males, 4 females; Fargo, Aug. 31, 1920, 2 

 males, i female: Pembina, Pembina Co., July 12. 1921 (C. 

 Thompson), i female; Buford, July 23. 1920, 11 males, 15 

 females; Williston, July 24-25. 1920, 3 males, 5 females; 

 Medora, July 30-Aug. 3. 1920, i male. 6 females ; Amidon, 

 Aug. 21-27, 1920. 7 males, 2 females. 



This was one of the most abundant and generally distributed 

 of the campestral species inhabiting the region. It was found 

 in almost as many situations as Mclanopliis viexicamis atliviis, 

 and frequently in as great or greater abundance ; but in com- 

 mon with that species its normal habitat is dry grassland. In 

 the grassy fields and pastures of the eastern part of the state 

 it frequently outnumbered all other species. Observations 

 made by Miss Olson in the vicinity of Bottineau show that 

 Camnula pellucida ranked about third in abundance — and 

 probably also in destructiveness — in the grain fields of that 

 region. It was surpassed only by Mchniopliis in. atlaiiis and 

 Melanoplns hirittatiis. In the western part of the state it 

 seemed in general to be somewhat less abundant than in the 

 east; it was common on the grassy uplands and on grass- 

 covered slopes and tops of buttes in the Bad Lands. 



