198 IOWA ACADEMY OP SCIENCES. 



Mr. V. C. Gambel], a student in entomology whose home 

 was at Winfield, in Henry county, saw no locusts there but a 

 man in that vicinity reported hearing them and had seen one 

 shell. This is rather uncertain testimony especially in view of 

 absence of reports from this and the adjoining county to the 

 north. If correct it shows a very feeble representation of the 

 insect there. Mr. Gambel 1 noticed in traveling on the Chicago, 

 Rock Island & Pacific railroad from Brooklyn to Iowa City 

 that the trees were injured, apparently by Cicada. If all due 

 to Cicada this would carry the brood into Poweshiek county 

 several miles further west than indicated by other reports. 



Mr. E. N. Eaton of Keota, in the extreme east of Keokuk 

 found no locusts and no reports of them for that county. 



Mr. P. H. Rolfs reports for the central eastern border of 

 Tama county that there were no locusts and none for about 

 five miles to the east of the county line, while Mr. F. A. Sir- 

 rine reports for a point about six miles further north that 

 locusts were in Tama county, two miles west of the county line 

 in Geneseo and Clark townships, but not in townships west so 

 far as he could learn. 



The following additional statements from correspondents 

 have a special significance in determining the border line: 



Louisa county, Wapello township, "None; a few in north 

 part of the county. " Columbus City, "Locusts present." In 

 Keokuk county, Clear Creek township, "None here this year, 

 but here seventeen years ago." Prairie township, "None yet; 

 were here seventeen years ago." Garman township, "No 

 locusts, last in 1877" [1878 Brood XIII probably]. Iowa county, 

 York township, "Locusts in limited numbers in northeast third 

 of this township." Pjweshiek county, Malcom township, 

 "None." Sheridan township, "None." Bear Creek township, 

 "None. None seventeen years ago." Warren, "None yet, 

 July 15th. Were here sixteen and seventeen years ago; second 

 year in great numbers and did great damage to fruit trees and 

 shrubbery." Chester township, " No seventeen year locusts to 

 amount to anything; appeared in 1851 and 1878." [Brood XIII]. 

 Black Hawk county. Spring Creek township, "Yes, and seven- 

 teen years ago. " East Waterloo township, one correspondent 

 says: "No, never here." Another says: "No. A few seven- 

 teen years ago." Fayette county, Westfield township, " None; 



