Occasional Papers of the Museum of Zoology 49 



graceful O. gladiator; the comparative numbers of the species 

 varied from place to place, but in general they seemed to be 

 about equally common. 0. concinnmn was usually the only 

 one found in the thick patches of sedges which grow in places 

 on the shores of the lake. Two specimens were taken in other 

 habitats, one in a clump of honeysuckle in a bare pasture near 

 the edge of the woods, the other in tall, dry grass in a dry 

 coulee half a mile south of the lake. 



Couocephalus fasciatus fasciatus (DeGeer). — Devils Lake, 

 July 2T,, 1919. I male; July 19-Aug. 13, 1920, 32 males, 27 

 females; Stump Lake, July 24, 1919 (C. Thompson), i male; 

 July 24-25, 1920. 2 males ; Sheyenne River, Eddy Co., Aug. 

 8, 1920, 3 males, i female ; Lake Upsilon, Turtle Mountains, 

 Aug. 4-6, 1920, 9 males, 7 females; Fargo, Aug. 31, 1920, 8 

 males, 6 females. 



Common in all grassland habitats in eastern North Dakota, 

 where it was the most common Tettigoniid. It seems to pre- 

 fer slightly more humid conditions than C. liridifrons, but the 

 two species are very frequently found together. Specimens 

 were taken on the dry flats around the lake shores, in grass 

 and sedge marshes, in moist meadows, in brushy fields and 

 pastures, in dry grassland, and in cultivated fields. C. fasci- 

 atus was not taken in the western part of the state. 



Couocephalus viridifrons Blatchley.-'' — Devils Lake, July 23, 

 1919, I male, 2 females ; Jifly 18- Aug. 16. 1920, 40 males, 27 

 females, i juvenile female; Sheyenne River, Eddy Co., Aug. 

 8, 1920, I female ; Stump Lake, July 24, 1920, i female ; Lake 

 Upsilon, Turtle Mountains, Aug. 2, 1920, i female ; Bottineau, 

 Aug. I, 1,920, 2 males, 2 females; Fargo, Aug. 31, 1920, 4 



^^ Rehn, in letter, seems to doubt the distinctness of this species 

 from saltans Sc. 



