Occasional Papers of the Museum of Zoology 29- 



At Devils Lake this species was found in a restricted area 

 on the flats bordering the lake at the Narrows, intermediate 

 between the beach zone and the zone of tall herbage and 

 low shrubbery on the upper part of the flats. In this area 

 the vegetation was scanty and occurred in patches separated 

 by nearly bare spaces of sandy or pebbly soil, in many 

 places incrusted with a thin deposit of alkali ; the conditions 

 were distinctly xerophytic. This was the favorite habitat of 

 Trimerotropis vinculata, which was found with T. brnneri,. 

 though present in much greater numbers. In the southwest 

 T. hruneri was taken on the sparsely vegetated, rocky edges 

 of the mesa top of Black Butte, and in dry fields and pastures 

 in the vicinity of Amidon. Though scarce, the conditions 

 under which it was found make it probable that it is of gen- 

 eral occurrence in this region. In the field this species has 

 much the appearance of a miniature Hadrotettix. In flight it 

 stridulates with a rapid, crackling noise ; it may stridulate dur- 

 ing the entire flight or for only a brief portion of it at the 

 start or near the end. 



In this series of 78 specimens the following deviations from. 

 McNeill's description^^ can be noted : Pronotiim with crest 

 of prozona in nearly all specimens slightly or distinctly bilobed ; 

 no distinct light markings on lateral lobes in majority of 

 specimens; posterior angle of metazona varying from slightly 

 more to slightly less than a right angle; Tegmina with the 

 basal band always distinct, solid ; the area between the base 

 of the tegmen and the basal band varies from light reddish 

 brown, with the basal band standing out prominently as a 

 narrow, dark bar at the basal third, to dark fuscous, fusing 

 with the basal band to form a broad infuscation of the entire 

 basal third of the tegmen; median band in most cases solid 



isProc. U. S. Nat. Mus., xxiii, 1901, pp. 423-425. 



