42 
On the 20th October of this year, the work of this fly was again 
evident at Robinson, larvae occurring in three fields out of ten ex- 
amined by my friend Mr. Moore. 
As confirming the evidence from our breeding cages of the early 
hatching of a considerable percentage of the flaxseeds of the spring 
brood, I quote from a private letter from Mr. John Marten.* He 
says, '‘I have found but few of the spring brood of larvae, as I wrote 
you in my last, and no flaxseeds; but on June 8, I found an adult 
female sticking in the oil on my lamp in my room. During the 
subsequent week I found four others on lamps. I was not well 
enough at the time to go to the fields, or I might possibly be able 
to report something more interesting now.” 
I append a tabular exhibit of the observations reported above in 
order to bring the details more clearly under the eye. 
* Mr. Marten was for a long time assistant of Dr. Cyrus Thomas, my predecessor in 
the office of State Entomologist, and is in every way an intelligent and competent ob¬ 
server, thoroughly acquainted with the Hessian fly, in whose midst he has lived for years. 
CALENDAR. 
1888. 
a 
o 
Date. 
Larvae. 
Flaxseeds. 
Imagos. 
Remarks. 
1 
2 
3 
4 
5 
6 
7 
8 
9 
10 
11 
12 
13 
14 
15 
16 
17 
18 
19 
20 
21 
22 
23 
April 
( < 
May 
< < 
June 
i i 
July 
Aug. 
Sept. 
Dec. 
• « 
c • 
10 .. 
14.. 
5.. 
17.. 
24.. 
28.. 
3.. 
DuQuoin 
Odin. 
Decatur . 
12 
4-15 
Centralia 
Centralia, 
Odin. 
Macoupin Co. ... 
Granville. 
Centralia 
Centralia 
DuQuoin 
DuQuoin 
26 
29 
30 
4 
7 
9 
20 
5 
7 
6 
6 
9.. 
27.. 
Anna 
Warsaw ... 
Godfrey.... 
Jerseyville 
DuQuoin .. 
Effingham. 
Villa Ridge 
DuQuoin... 
DuQuoin... 
DuQuoin... 
Centralia.. 
Kansas 
Anna... 
Albion 
Centralia 
Breeding Cage 
Breeding Cage 
Bred from No. 3 
Bred from No. 3 
Living larvae 
Living larvte 
Living larvae, 
1884. 
24 
Apr. 9 
Marshall. 
25 
May 19.. 
Albion 
26 
“ 21.. 
Marshall. 
27 
“ 25.. 
Robinson . 
Robinson. 
8 
“ 26.. 
Robinson. 
Robinson. 
9 
“ 27.. 
Mt. Carmel. 
Mt. Carmel. 
0 
“ 30.. 
Carmi. 
3l 
“ 31.. 
Eldorado.. 
32 
June 2.. 
Robinson. 
Robinson. 
33 
“ 3.. 
West Union. 
34 
3.. 
Villa Ridge. 
35 
4.. 
Anna. 
Just hatched .. 
