oa 
CHRONOLOGICAL ACCOUNT OF DIFFERENT BROODS. 19 
The extent of this Brood II must therefore be limited. Habersham 
County must be stricken out, and no doubt Rabun also, while Walker 
and the adjacent northwest counties should be added. 
1882,.—For the year 1882 I failed to get any further information about 
this brood. 
Broop ILI.— Septendecim—1870, 1887. 
In the year 1870, and at intervals of seventeen years thereafter, théy will, in all 
probability, appear in what is known as tbe ‘‘ Kreutz Creek Valley,” in York County, 
Pennsylvania, and possibly in Vinton County, Ohio, and Jo Daviess County, Illinois. 
Mr. 8. S. Rathvon, of Lancaster, Pa., speaking of this brood, says: ‘Lancaster 
County is bounded on the southwest by the Susquehanna River, dividing it from the 
county of York, along the northeastern margin of which there is a mountain range, 
sloping down to the river. Along that slope Cicadas were abnndant the present sea- 
son (1868—Brood XXII). But on the southwest side of the range, in what is known 
as the Kreutz Creek Valley, there were none. They appeared last in this valley in 
1853, and previous to that year at intervals of seventeen years froin time immemorial.” 
Dr. Smith records their appearance in 1853, both in Vinton County, Ohio, and Jo 
Daviess County, Illinois. 
1870.—From all that I can learn, this brood is invalid, and has no ex- 
istence. Mr. Rativon failed to record its appearance in 1870 in the 
Kreutz Creek Valley, and the Rev. Dr. J. G. Morris, of Baltimore, Md., 
writes positively that it did not appear. He says: ‘*Our Lancaster 
friend, Rathvon, was a little mistaken in presuming that this would be 
the vear of the appearance of the Cicada in Kreutz Creek Valley, York 
County, Pennsylvania. I have made diligent inquiry of persons familiar 
with that district, and they report no locusts. Now, it may be that he 
gives that title to a district different from that which I know by that 
name (for I was born in that vicinity), but the Kreutz Creek Valley, 7 
or 8 niles east of York, and bordering on the Susquehanna, was not 
visited this year by this singular Cicada.” 
I likewise failed to hear of the ‘‘locusts” either in Vinton County, Ohio; 
or in Jo Daviess County, Illinois, and as all three of the localities are 
restricted and widely separated, and as those in Illinois and Pennsyl- 
vania are within the range of Brood V, which occurs one year later, the 
insects recorded to have appeared in the localities named in 1553 were 
most likely precursors only of the more extensive Brood V. 
Broop IV.—Tredecim—1883, 1896. 
In the year 1870, being the same as the preceding, they will, in all probability, ap- 
pear,in Jackson, Gadsden, and Washington Counties, Florida, having appeared there, 
according to Dr. Smith, in 1844 and 1557. 
1870.—The appearance was confirmed in 1870, and, as the following 
communication will show, the brood extends even into Alabama, Missis- 
sippi, and Tennessee: 
Dear Sir: The 13-year brood of the Periodical Cicada, mentioned in your first Mis- 
souri report (your Brood IV), appeared, according to prediction, in nortb western 
