10 THE CHINCH BUG. 
by Koebele; and in the vicinity of San Francisco, Cal., by both Uhler 
and Koebele; Orizaba, Mexico, by H. H. Smith; Tainaulipas, Mexico, 
by Uhler; Mesilla Park, N. Mex., by Cockerell; Florida, by Schwarz 
and Dr. J. G. JSTeal; Sydney, Gape Breton, by W. H. Harrington; Mus- 
koka, Ontario, Canada, by E. P. Van Dnzee; and Winnipeg, Manitoba, 
where a single specimen was collected by Dr. James Fletcher and 
given by him to Mr. Harrington, to whom I am indebted for informa- 
tion regarding its occurrence. Inland, in the United States, it may be 
said to be generally distributed from Texas to Manitoba and eastward 
to the Atlantic coast, along which it is known to occur almost con- 
tinuously from Cape Breton to Cape Florida. It is also very probable 
that its occurrence along the Pacific coast is much more extended 
than is at present known, as it has not been searched for to any extent 
in that region. (See map, fig. 1.) 
HIBERNATION. 
The chinch bug hibernates in the adult stage, and though there may 
be occasional exceptions, especially in the South, it has yet to be 
observed in very early spring in any other than the adult stage, at least 
in any locality north of Mexico. I have observed pupa? in central 
Illinois apparently in hibernation in company with adults on November 
11, but there is no proof that these survived the winter. In Tensas 
Parish, La., adults were abroad in considerable numbers during March, 
1887, yet there was no indication of any young having wintered over. 
The adults were pairing and seemingly engaged in oviposition, pre- 
cisely as is to be observed in the Northern States during May and June. 
I did not observe any young, as I most certainly should have done had 
they occurred, as my observations were made in fields of young corn, 
where, had the young bugs been present even in very limited numbers, 
they would certainly not have escaped my rigid searching under and 
about the bases of the leaves of the young corn plants. 
Dr. Howard* quotes Prof. G. F. Atkinson, at that time of Chapel 
Hill, N. C, as having observed half grown chinch bugs on crab grass, 
about the 1st of October. The same authority also quotes Dr. Eiley 
to the effect that many of the chinch bugs pair in the fall preparatory 
to seeking winter quarters, and also cites the fact that Mr. James O. 
Alwood observed them pairing in a field of uncut pearl millet, October 
27, 1887, on the grounds of the Ohio Agricultural Experiment Station, 
then at Columbus, Ohio. Dr. Cyrus Thomas.f in speaking of the pos- 
sibilities of an occasional third brood in southern Illinois and Ken- 
tucky, states that there were some evidences of this, but not sufficient 
to justify him in asserting it as a fact or to satisfy him of its correct- 
ness. 
*The Chinch Bug, by L. O. Howard; Eeport of the Commissioner of Agriculture 
for the year 1887, pp. 51-88. 
t Bulletin No. 5, IT. S. Entomological Commission, p. 13. 
