31 



sota they were determined from Illinois as not the migratory species, 

 but as belonging to some of the local non-migratory kinds. M. Lugger 

 has had the hearty co-operation of the State authorities and especially 

 of the governor of the State, and we shall look forward to his report 

 with much interest. 



THE PEKIODICAL CICADA IN 1888. 



During the present year two broods of the Periodical Cicada or so 

 called "Seventeen-year hocusV^ {Cicada septendecim, h.), one of the 

 seventeen-year {septendecim) race and one of the thirteen-year {trede- 

 cm) race, have made their appearance in different parts of the coun- 

 try. 



The following is a list of localities in which they are supposed to 

 have appeared, and we shall be pleased to receive any information, 

 confirmatory or otherwise, from persons who may receive this bulletin, 

 as we are desirous of definitely limiting the extent of country over 

 which these broods appear. 



Brood v.— <Sep<endectm (1854, 1871, 1888). 



Wisconsin. — Waukesha, Walworth, Jefferson, Rock, Green, Dane (?), Iowa, Grant, 

 Crawford, Eichmond, Sauk Counties. 



Iowa. — Mitchell, Howard, Winneshiek, Allamakee, Clayton, Fayette, Chickasaw, 

 Floyd, Bremer, Butler (?), Dubuque, Delaware, Buchanan, Black Hawk, Jack- 

 son, Jones, Linn, Benton, Clinton, Scott, Cedar, Johnson, Muscatine, Louisa, 

 and Des Moines Counties. 



Illinois. — All of the northern counties. The boundary line, in a general way, may 

 be drawn from the northwest portion of Mercer County, southeast to the 

 Illinois River at Peoria, west along the Toledo, Wabash and Western Rail- 

 road. There seem to be detachments extending farther south, especially in 

 the eastern portion of the State, and they occur as far south as Shelby 

 County. 



Indiana. — The boundary in this State is not well-defined, but includes the ex- 

 treme northwest counties, extending as far south as the Kankakee River. 



Michigan. — In this State the southern tier of counties extending from Lake Mich- 

 igan east to the middle of the State. 



Pennsylvania. — Lancaster County; the southeast by eastern portion, known as 

 the " Pequea Valley." This locality was not verified in 1871, although there 

 is no doubt of the appearance of the insect in immense numbers in 1854. 



Brood X.—Tredecim (1849, 1862, 1875, 1888). 



Texas. — We are particularly desirous of verifying this brood. Its existence now 

 rests on the single statement by Dr. Gideon Smith that he was informed that 

 the insect appeared in vast numbers in parts of Texas in 1849, but that he was 

 not able to get any particulars. 1875 did not furnish any information con- 

 cerning this brood ; hence our desire for full and accurate returns from Texas 

 this year. 



THE CHINCH BUG IN 1888. 



The long contrnned rains extending over a large part of the Chinch 

 Bug territory during the late spring and early summer the present 

 season have done much to verify our prediction on page 31 of Bulle- 



