' CHRONOLOGICAL ACCOUNT OF DIFFERENT BROOl 39 
County, observed the Cicadas in 1881 in Anderson, Oconee, and Picl 
Counties. 
From Louisiana no information has reached me since 1868, and the 
same holds true of Indian Territory, but I nave no doubt that the ,; up- 
land brood" alluded to by Mr. W. S. Robertson, of Muscogee P. O.. in 
connection with Brood XIV [vide p. 33), must be referred to this Brood 
XVIII. 
Mississippi, as I suspected in 1868, must be added to the States in 
which this brood occurs, as it was observed in 1881 at Kirkwood. Madi- 
son County, by Dr. E. IJ. Anderson (letter of May 3, 1881). 
The State of Virginia must also be added to the vast region occupied 
by this brood, since Mr. Calvin J. Cowles, of Charlotte, N. C. Bays in 
his letter referred to above: "They were published as being noisy and 
numerous in Prince George County. Virginia." This county is in the 
southeastern portion of the State. 
A most interesting and quite unexpected addition to our knowledge 
of this brood is contained in the following letter from Dr. B. F. Kings- 
ley, acting assistant surgeon, United States Army, of Fort Quitman. El 
Paso County, Texas, dated July 5, 1881: 
•• Having just read your very interesting letter to the Tribune, dated 
Washington. D. C, June lb', 1881. relative to Cicadas, I take pleasure 
in complying with your solicitation for reports from different sections, 
concerning the Cicada. About the 20th of May they made their ap- 
pearance in this section in immense numbers. Every tree and bush 
from El Paso, Tex., to this point and below, a distance of over 100 
miles, was literally alive with them. About two weeks ago they disap- 
peared as suddenly as they came. Six weeks previous to the appear- 
ance of the Cicada the cotton wood trees in this valley (of which there 
are a great many) were covered with a species of caterpillar, which 
rapidly disappeared upon the advent of the Cicada. The arrival of one 
and departure of the other seem to have been simultaneous. What, if 
any, the connection was, I am unable to say;* perhaps only a coin- 
cidence. I cannot say whether the Cicadas were confined to the valley, 
or were equally as widespread over the prairie." 
These Cicadas along the extreme western boundary of Texas belong, 
without question, to this Brood XVIII, which thus occurs in every one 
of the Southern States, except Florida/ and also in the adjacent por- 
tions of some of the more northern States. Its occurrence in the Kio 
Grande Valley even renders it quite probable. that it occurs in New 
Mexico and Mexico, and it will probably be found to extend along the 
bottom woods of the upper Colorado. Brazos, and other rivers in Tea is, 
* Tin iv is of course no connection whatever between this caterpillar, what 
Bpeciea it may have been, and the Cicada. 
tThe Periodical Cicada docs not seem to extend into the peninsula of Florida: in 
fact, with the exception of the extreme northwestern corner, no broods have ever 
been observed in that State. 
