10 THE CHINCH BUG. 
Volcan de Chiriqui, Bugaba, and San Feliz, Panama, by Champion; 
San Geronimo, Paso Antonio, Panzos, Champerico, and Rio Naranjo, 
Guatemala, by Champion; Lower Purissima, Lower California, by 
Uhler; Alameda, Cal., by Koebele; and in the vicinity of San Fran- 
cisco, Cal., by both Uhler and Koebele; Orizaba, Mexico, by H. H. 
Smith; Tamaulipas, Mexico, by Uhler; Mesilla Park, N. Mex., by 
Cockerell; Florida, by Schwarz and Dr. J. C. Neal; Sydney, Cape 
Breton, by W. H. Harrington; Muskoka, Ontario, Canada, by E. P. 
Van Duzee, and Winnipeg, Manitoba, where a single specimen was 
collected by Dr. James Fletcher and given by him to Mr. Harring- 
ton, to whom I am indebted for information regarding its occurrence. 
Inland, in the United States, it may be said to be generally distributed 
from Texas to Manitoba. 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. The writer observed pup in 
central Illinois apparently in hibernation in company with adults 
on November 11, but there is no proof that these survived the sue- 
ceeding winter. In Tensas Parish, La., adults were abroad in con- 
siderable numbers during March, 1887, yet there was no indication 
of any young having wintered over. The adults were pairing and 
seemingly engaged in oviposition, precisely as is to be observed in 
the Northern States during May and June. No young were observed, 
as most certainly would have been the case had they occurred there, 
for 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 the rigid searching under and about the 
bases of the leaves of the young corn plants. 
Doctor Howard ¢ quotes Prof. G. F. Atkinson, at that time of Chapel 
Mill, N. C., as having observed half-grown chinch bugs on crab grass, 
about the Ist of October. The same authority also quotes Doctor Riley 
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, Octo- 
ber 27, 1887, on the grounds of the Ohio Agricultural Experiment 
Station, then at Columbus, Ohio. Dr. Cyrus Thomas,’ in speaking 
#'The Chinch Bug, by L. O. Howard; Report of the Commissioner of Agricul- 
ture for the year 1887, pp. 51-88. 
» Bulletin No. 5, U. S. Entomological Commission, p. 13. 
