196 IOWA ACADEMY OF SCIENCES. 



Dr. LeBaron (2d Rept. 111. Insects p. 130) writes as follows: 



"In the Prairie Farmer for July 29tli, a brief outline of the 

 locust racge was published by Mr. Suel Foster, of Muscatine, 

 Iowa, bub in this outline, as Mr. Foster himself stated, many 

 gaps were left undetermined. I have found Mr. Foster's out- 

 line to be, in the main, correct, and have filled, as far as pos- 

 sible, the gaps which he left. I will take the same starting 

 poinb with Mr. Foster, namely, the junction of the Iowa River 

 with the Mississippi in Louisa county, Iowa. Thence, in a 

 northwesterly direction, following the eastern branch known 

 as the Cedar River as far north as about opposite the mouth of 

 the Wisconsin river. Thence east in about the same line of 

 latitude to Lake Michigan, following the Wisconsin river so far 

 as it lies in this line, thus leaving out the northernmost counties 

 of Iowa and the two lower tiers of counties of Wisconsin." 

 The rest of the description refers only to territory outside of 

 Iowa. 



In 1878 at the time of the occurrence of Brood XIII in south- 

 ern low^a, Prof. C. E. Bessey, then of the Iowa Agricultural 

 College, collected data for the determination of the boundaries 

 of that brood and incidentally collected considerable informa- 

 tion concerning the distribution of Brood V in the eastern part 

 of the state. 



His report upon this investigation appeared in the American 

 Entomologist, Vol. I. N. S. , p. 27. As there given the area 

 included is considerably greater than that outlined by Dr. 

 LeBaron. He does not seem to have noticed the record of 

 LeBaron given above. His outline is as follows: 



Starting at nearly the same point in Wapello, Louisa county, 

 the line he draws extends more to the westward, including the 

 western or Iowa branch of the Iowa river as far west as into 

 Tama county, and considerable territory to the southward, 

 including all of Johnson, more than half of Iowa and a portion 

 of Poweshiek counties. From Tama county northeastward to 

 the extreme northeast corner of the state includicg nearly all of 

 Black Hawk, Fayette and Allamakee counties, and part of 

 Bremer, Chickasaw and Winneshiek, with a possible extension 

 westward so as to include all the counties to the north and east 

 of Tama, though reference to his notes indicates some of the 

 counties included, as Allamakee, Winneshiek, Black Hawk, 

 Fayette and Bremer to be doubtful. 



