41 
clays later, and both free larvae and flaxseeds were received 
. i correspondent at Robinson on the 2d of June. 
the following day flaxseeds were received from West Union 
rk county, which, placed in open fruit jars and moistened 
rly, being otherwise exposed to conditions as exactly similar to 
prevailing in the fields as I was able to supply in the Labo- 
;j yielded adults from the 22d to the 28th June, while flaxseeds 
eel at the same date from Villa Ridge, in extreme Southern 
3, gave the imago from the 17th to the 20th of that month, 
eels obtained on the 4th at Anna, in Union county, yielded 
ult on the 22d. Flaxseeds occurred again on the 6th and 
DuQuoin, and stalks received from Robinson on the 14th 
tied a number of them and a single partly grown, naked larva, 
eds were collected at Robinson on the 17th, at Anna on the 
ng day, at Robinson on the 20th, and at Anna on the 24th. 
cimens of flaxseeds received from Robinson on this date 
the adidt fly in our breeding cages four days later. In Mar¬ 
in the 25th, and at Robinson on the 27th and 30th, flaxseeds 
Collected. One of those from the place last mentioned was 
| when opened, to contain a living larva; but others were evi- 
dried up, and several had already yielded parasites when 
ed. Those obtained from Marshall on the 25th were found in 
me condition, several containing living larvm and others being 
up or parasitized. 
*1 . 
the 28tli imagos were noted pairing in the breeding cages, nav- 
st emerged from the flaxseeds obtained June 3 at West Union, 
na, on the 1st July, a most thorough and long continued search 
viously infested fields was made for the adult fly, the stubble 
ill standing grain being carefully swept by us and the shocks 
in being examined at great length. Situations adjacent to the 
fields likely to yield the fly were also carefully gone over; 
aile numbers of other species of Cecidomyidae were collected, 
single adult Hessian fly resulted from this search. 
: seeds still continued to come in"from Eastern Illinois,—some 
shells and others containing healthy larvae being received on 
t and 5th July from Marshall, on the 7th from Villa Ridge, 
a the 12th from Anna. 
the 5th of this month a most extended and careful search was 
again in wheat fields near Anna by Mr. C. W. Butler, with 
me negative results as those of July 1, and my faithful cor- 
dents, E. C. Madison, of Marshall, and Thomas S. Moore, of 
;on, both reported that they were unable to find the imago, 
necl flaxseeds still occurred at Anna on the 12th, and on the 
>f that month my assistant, Mr. W. H. Garman, carefully, 
r several hours, searched the straws and stubble with the view 
ing the possibility of the occurrence of a second brood of 
ds in the. upper part of the straw,—the descendants of the 
merging in May and June. None occurred in the upper joints; 
3 r, although they were still abundant at the bases of the 
