54 
The Bulletin 
other individuals were tried in the same way, but we did not succeed 
in getting any more to pass through their stages, undoubtedly because 
the food was too poor. 
In all our tables four has been taken as the normal number of larval 
molts, and all our calculations are based on these results. Whether 
the unnatural conditions of the insectary could have had any influence 
upon the number of molts is entirely beyond our power to determine. 
But, as will be pointed out in another connection, the writer believes that 
the conditions in the insectary as provided during these investigations 
was near enough natural conditions not to produce any unusual results. 
. It is obviously impossible to follow the number of molts of an insect 
such as the southern corn bill bug under perfectly natural conditions, 
as normally it lives within its food plant. 
Table X. LARVAL DEVELOPMENT. 
Record 
Number 
Date of 
Hatching 
Date of Shedding 
Date of 
Pupating 
Number 
Days 
Larval 
Stage 
1st Molt 
2d Molt 
3d Molt 
4th Molt 
1 
June 
3 
? 
June 
24 
? 
July 
13 
July 
22 
48 
2 
June 
4 
? 
? 
? 
July 
1 
July 
8 
34 
3 
June 
4 
? 
? 
? 
? 
July 
8 
34 
4 
June 
8 
June 
13 
June 
26 
July 
6 
July 
11 
July 
19 
40 
5 . 
June 
9 
? 
? 
? 
July 
4 
July 
14 
35 
6 
June 
8 
June 
13 
June 
20 
? 
July 
1 
July 
11 
32 
7 
June 
9 
? 
? 
? 
? 
July 
9 
30 
8 
June 
9 
June 
16 
? 
? 
July 
1 
July 
7 
28 
9 
June 
9 
June 
15 
June 
20 
June 
24 
July 
1 
July 
6 
27 
10 
June 
10 
June 
15 
? 
July 
11 
July 
16 
July 
24 
44 
11 
June 
9 
June 
15 
? 
June 
24 
July 
3 
July 
13 
34 
12 
June 
11 
June 
15 
June 
24 
Jun 
28 
July 
6 
July 
16 
35 
13 
June 
10 
June 
16 
June 
20 
? 
July 
1 
July 
10 
30 
14 
June 
11 
? 
? 
? 
July 
3 
July 
10 
29 
15 
June 
11 
? 
June 
22 
June 
28 
July 
6 
July 
19 
38 
16 
June 
13 
June 
20 
June 
28 
July 
3 
July 
11 
July 
19 
36 
17 
June 
13 
? 
? 
? 
? 
July 
20 
37 
18 
June 
13 
? 
June 
24 
June 
29 
July 
8 
July 
17 
34 
19 
June 
15 
June 
20 
June 
26 
July 
3 
July 
6 
July 
15 
30 
20 
June 
15 
June 
22 
June 
26 
? 
July 
6 
July 
12 
27 
21 
June 
16 
June 
22 
June 
26 
July 
3 
? 
July 
12 
26 
22 
June 
16 
June 
20 
June 
24 
June 
28 
July 
11 
July 
18 
32 
23 
June 
16 
? 
June 
27 
July 
1 
July 
13 
July 
26 
40 
24 
June 
22 
June 
26 
June 
30 
July 
5 
July 
11 
July 
18 
26 
25 
June 
22 
? 
July 
5 
? 
July 
26 
Aug. 
7 
47 
26 
June 
22 
June 
29 
? 
? 
July 
11 
July 
22 
30 
27 
June 
22 
June 
29 
July 
3 
July 
12 
July 
20 
Aug. 
3 
42 
28 
June 
22 
June 
26 
June 
29 
? 
? 
July 
29 
37 
29 
June 
22 
June 
29 
July 
5 
July 
11 
July 
16 
July 
25 
33 
30 
June 
22 
June 
29 
July 
3 
July 
7 
July 
16 
July 
21 
29 
31 
June 
22 
June 
28 
July 
3 
July 
7 
July 
17 
July 
25 
33 
32 
June 
22 
June 
27 
July 
1 
July 
6 
? 
July 
22 
30 
33 
June 
23 
June 
28 
July 
3 
July 
6 
July 
18 
July 
29 
36 
34 
June 
23 
June 
27 
June 
30 
? 
July 
12 
July 
19 
26 
35 
June 
23 
June 
28 
? 
July 
11 
July 
17 
July 
24 
31 
36 
June 
24 
June 
29 
July 
3 
July 
7 
July 
15 
Aug. 
17 
54 
37 
June 
26 
? 
July 
5 
July 
11 
July 
15 
July 
25 
29 
