40 APPLE TWIGS, LOCUST DIFFERENT BRCODS. 



Southern Illinois, and the Creek Indian country west of Arkan- 

 sas, these last having been gathered by my friends, Robert W 

 Kennicott and William S. Robertson. They show that from one 

 end of this vast stretch of territory to the other, the species is 

 quite uniform in its size and marks. Mr. Robertson, writing 

 from Tullehassie, under date of May 24th, says : " I have heard 

 the Seventeen-year Locusts for ten days past, but they are not 

 plenty here. At Park Hill, however, twenty-five miles south of 

 this, in the Cherokee country, they are very numerous, and in 

 these hungry times, occasioned by the severe drouth of last year 

 and this spring, the people are glad to gather and eat them." 



A fourth brood, and which has been the oftenest and most fully 

 noticed of any, reaches from Pennsylvania and Maryland to South 

 Carolina and Georgia, and, what appears to be a detached branch 

 of it, occurs also in the southeastern part of Massachusetts. It 

 was observed as long ago as 1715, and its reappearance has been 

 recorded seven times since, the last one of which was in the year 

 1851. It will consequently reappear in 1868. 



A fifth brood extends from Western Pennsylvania, through 

 the valley of the Ohio river, and down that of the Mississippi to 

 Louisiana. This appeared last in 1846, and will therefore re- 

 appear in 1863. 



A sixth appeared the past year around the head of Lake Michi- 

 gan, and as far east as to the middle of the State of Michigan, and 

 extended west across Northern Illinois and onwards, an unknown 

 distance, into Iowa. It reached south at least as far as Peoria, 

 and north to the line of Wisconsin. Mr. M. P. Weter, of Tirade, 

 Walworth county, Wisconsin, informed me that a narrow strip, 

 but about a mile in width, extended through his neighborhood, 

 and onwards, north, for a distance of at least twenty miles. 



A seventh is recorded as having appeared in the western part 

 of North Carolina in the year 1847. 



An eighth was noticed at Martha's Vineyard, Mass., in 1833. 



A ninth was noticed in the valley of the Connecticut river, in 

 Massachusetts, in the years 1818 and 1835. 



