31 
lany believed that they were leaving the country; but it was 
imply their mating season—the only time (twice a year) at which 
ley take the wing. 'Notes the fact that the cast skins of the in¬ 
set are often mistaken for dead bugs. Two insect enemies are 
lentioned ,—Hippodamia maculata (a common species of “lady 
ird”) and Chrysopa illinoiensis (a species of the “golden-eyed 
y”). These insects were very numerous,—especially the former, 
hich could be counted by hundreds on every square yard of 
round after shaking the corn,—but they made y^ry little impres- 
on on the chinch bugs. Found chinch bugs alive under snow 
fter several days of a temperature 15 c or 20° below zero, but 
ead if above the snow. In frozen corn husks they will live at a tem- 
erature below the freezing point, and perhaps below zero. In 
larch and April, 1865, found a large majority of the hibernating 
ugs alive. May 18 and 19, abundant in spring wdieat, barley, 
tc. Eggs laid latter part of this month, mostly on roots and 
-,alks beneath the ground. First larvae of the season seen June 10; 
dllions of young bugs June 17, when parent bugs were princi- 
ally dead. “July 16. Found many chinch bugs dying in the low 
:eek-bottom land from the effect of some disease, while yet in 
le larval state. July 22. On low ground young chinch bugs all 
ead from the disease, and it is spreading rapidly on the hills and 
igh prairies. Weather wet since first of July. July 28. Great 
ambers in all stages of their development are dying of the pre- 
; filing disease. Aug. 22. It is almost impossible to find even 
few cabinet specimens of chinch bugs alive.” Says that 
ie parent chinch bug is about twenty days in laying about five 
undred eggs, and then dies, the imago appearing in from fifty- 
‘ven to sixty days after the egg is laid; and that there are two 
istinct broods in a season, and. only two. The disease alluded to 
as associated with long-continued wet and cloudy cool weather, 
id was no doubt in some measure due to it. No attempt to de- 
pe the direct cause. The disease was not confined to the chinch 
ag. Considers it proven “that epidemic diseases are incomparably 
e most important agents in all nature in destroying noxious in- 
pets.” Very difficult to find any chinch bugs in 1866. 
himer, Henry. —Additional Note on the Chinch Bug. (Proc. Acad. 
Nat. Sci. Phila., 1867, v. 19, p. 234.) 
; Mt. Carroll, Ill., Sept. 16, 1867. “The chinch bug has entirely 
sappeared from this region, so far as I have been able to ob- 
i rve. Efficient cause, the continuation of the epidemic among 
1868. 
jjRAiRiE Farmer, May 9, 1868, v. 21, n. s. p. 297. Birds vs. In¬ 
sects. 
In this article (probably editorial) Dr. # Henry Shimer is credited 
|ith the following statement: “One hundred chinch bugs have 
ien found in the crop of a quail, when shot, and, in a season,. 
