238 



Au. 20. (76) Abundant everywhere on sand in open ground. 

 Waukegan, sandy ridges near L. Michigan. 



Mestobregma thomasi Gaud. ELI, 2,3,5, Mol. : Au. 17, IN, 11), 

 22, S. 2, 8. (13) Common on the dunes. Throughout S. 111., 

 on dry barren ground. ( Trachyrhachis thomasi in text.) 



Pslnidia fenestrates Serv. H.l, 2,3, 4, 5, Mol., Mer. ; Au. 12, L3, 

 14, 15, 17, 18, 19, 20, 22, 29, 30, S. 2, 8. Nymph, Au. 18. (85) 

 Abundant everywhere on the blow-sand; wings rose-red. 

 Waukegan, sandy ridges near L. Michigan. (Note 4) 



Trimerotropis citrina Scudd. H.2, 6, Mer. ; Au. 12, 29, 8. 5. 1 12 i 

 Sandy shores of Ohio, Mississippi, and Illinois rivers in Illi- 

 nois ; one taken at Devil's Hole. "N. 111." (Note 5) 



Schistocerca americana Drury. H.m. Seen with Locustichf in suit 

 grass in moist bottom of old blowout. C. and S. 111. 



Schistocerca alutacea Harr. H.2, 3, 4, Mol., Mer.; Au. 14, 15, 17. 

 18, 20, 29,30, S. 2, 8. Nymph, Au. 20. (69) Common 

 along the margins of black-jack forest and about thickets ami 

 bunch-grass; roadsides. Dry soils of the Ulinoian giaciation 

 in S. 111., and a few restricted localities in N. 111. ; swales be- 

 tween sand ridges, Waukegan. 



(Jampylacant 'ha acutipennis Scudd. H.4, Mer.; Au. 20, 30. (2) 

 Found associated with t\v next species, but in much fewer 

 numbers. Perhaps only a dark grayish variety of it. ( 'lay < '<>. 



Campylacantha olivacea Scudd. H.l, 2,4, Mer.; Au. 18, 20, 21,22, 

 29, 30, S. 2. Nymph, Au. 18. (19) On the grassy dunes, 

 moderately common. Abundant on Ambrosia bidentata on 

 the dry soils of the Ulinoian giaciation across southern Illinois. 



Hesperotettix pratensis Scudd. H.3, Au. 18. (17) On a patch of 

 Euthamia (Solidago) in a basin among sand-hills. Taken in 

 southern Illinois along the I. 0. R. H. : swales among sand 

 ridges, Waukegan; long grass on summit of Mississippi H. 

 bluff at Chautauqua, 111., near Grafton, .July 20. 



Hesperotettix speciosus Scudd. H.l, 2, 3; Au. 18, 22, S. 2. Nymph. 

 Au. 22. (4) Occasional with Campylacantha olivacea. Taken 

 on the dry soil of the Ulinoian giaciation in southern Illinois. 



Melanoplus Havidus Scudd. H.l, 2, 3, 4, 5, Mol., Mer. ; Au. 12, 13, 

 14, 18, 19, 20, 22, 29, 30, S. 2, 8. Nymphs, Au. 17, 18, 19, 20. 

 (51) Common everywhere in blowouts and on very sandy 

 ground. Not taken elsewhere in Illinois. Associated by 

 McNeill with the sand-bur ( Cenchrus), but it is apparently an 



