CHRONOLOGICAL ACCOUNT OF DIFFERENT BROODS. 19 
The extent of this Brood II must therefore be limited. Eabersham 
County must be stricken out, and no doubt Rabun also, while Walker 
and the adjacent northwestern counties should be added. 
1882. — For the year 1882 I failed to get any further information about 
this brood. 
Brood III. — Septendecim — 1870, 1887. 
In the year 1S70, and at intervals of .seventeen years thereafter, they will, in all 
probability,' appeal in what is known as the " Kreutz Creek Valley," m York County, 
Pennsylvania, and possibly in Vinton County, Ohio, and Jo Daviess County, Illinois. 
Mr. S. S. Rathvon, of Lancaster, Pa., speaking of this brood, says : " Lancaster County 
is bonnded on the southwest by the Susquehanna River, dividing it from the county 
of York, along ;he northeastern margin of which there is a mountain range, sloping 
down to the river. Along that slope Cicadas were abundant the present season 
(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 from time immemorial." 
Dr. Smith records their appearance in Irio'.i, both in Vinton County, Ohio, and Jo 
Daviess County, Illinois. 
1870. — From all that I can learn, this brood is invalid, and has no 
existence. Mr. Rathvon 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 year 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 1 was born in that vicinity), but the Kreutz Creek Valley, 7 
or 8 miles 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 Penn- 
sylvania are within the range of Brood V, which occurs one year later, 
the insects recorded to have appeared in the localities named in 1853 
were most likely precursors only of the more extensive Brood V. 
Brood 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 ( !o unties, Florida, having appeared there. 
according t<> Dr. Smith, in 1844 and L857. 
1870. — The appearance was confirmed in 1870, and, as the following 
communication will show, the brood extends even into Alabama. Mis- 
sissippi, and Tennessee : 
DeaK SlR : The 13-year brood of the Periodical Cicada, mentioned in your first Mis- 
souri report (your Brood I V ), appeared, according to prediction, in northwestern 
