pec. ii, 191.6 
Macrosiphum granarium 
473 
Table III .—Line of generations of Macrosiphum granarium at Richmond , Ind ., in iq 8 o — 
Continued. 
Temper¬ 
ature. 
First-born generation series. 
Last-born genera¬ 
tion series. 
Bate. 
1 
g 
s 
j 
1 
2 
S3 
8 
a 
to 
g 
1 
1 
J 
8 
1 
M 
I 
8 
i 
8 
w 
n 
1 
1 
<s 
S3 
8 
«« 
£ 
J 
S3 
1 
.M 
t/i 
§ 
| 
1 
| 
CO 
g 
f 
S 3 
| 
bo 
6 
u 
w 
8 
•g 
S) 
1 
1 
2 
1 
w 
5 
1 
g 
1 
! 
! 
1 
2 
i 
l 
g 
I 
S3 
1 
1 
1 
£ 
j Fourteenth generation. 
| 
| 
! 
g_ 
! 
1 
1 
M 
m 
j Seventeenth generation. 
1 
! 
1 
m 
g 
s 
s 
1 
be 
I 
1 
I 
n 
S3 
8 
b£ 
8 
I 
’8 
W 
6 
X 
1 
1 
1 
& 
t n 
Aug. 29 
30 
31 
Sept. 1 
2 
°F. 
°F. 
~ i 
i 
I 
0 
I 
93 
93 
95 
90 
77 
78 
81 
86 
89 
74 
82 
5 1 
62 
54 
56 
46 
37 
48 
50 
53 
46 
40 
44 
2 
1 
B 
2 
2 
1 
0 
...I .. 
I 
O 
0 
0 
O 
jo 
O 
1 
\o 
O 
3 
. . J 
2 
2 
0 
I 
! 
4 
.... 
O 
0 
0 
I 
B 
5 
6 
1 
:::: 
\ 
fo 
0 
i 
O 
0 
... . 
I 
/ 1 
\o 
0 
..J 
O 
0 
8 
i 
...!... 
2 
3 
0 
0 
0 
iD 
0 
0 
D 
0 
9 
90 
2 
0 
0 
ij 
1 
5 
B 
0 
94 
89 
84 
84 
85 
87 
91 
0 
2 
0 
0 
13 
14 
54 
57 
49 
56 
52 
50 
48 
1 
4 
0 
I 
1 
0 
2 
0 
'} ‘ 
3 
3 
2 
0 
2 
*5 
16 
17 
18 
0 
2 
0 
i 
3 
0 
1 
0 
...i... 
0 
L 
Jo 
! 
L 
r 
1 
\o 
J 2 
L 
19 
93 
5 ° 
jo 
... 
21 
22 
23 
95 
I 1 
0 
\o 
J 3 
5 1 
5 i 
53 
0 
2 
0 
9 r 
90 
0 
1 
0 
1 
1 
0 
0 
0 
25 
26 
27 
92 
51 
0 
2 
0 
1 
1 
0 
0 
2 
87 
76 
53 
74 
54 
44 
34 
33 
\ 
\o 
0 
I 
>2 
<0 
2 
u 
29 
30 
j 
lo 
O 
B 
j 
0 
O 
0 
I 
1 
0 
O 
0 
0 
57 
69 
79 
86 
83 
76 
60 
60 
65 
5 1 
59 
73 
74 
79 
78 
81 
Ra 
25 
27 
27 
34 
39 
42 
41 
37 
45 
39 
25 
26 
38 
46 
42 
39 
46 
47 
47 
45 
40 
5 ® 
55 
32 
1 
0 
O 
0 
I 
0 
0 
2 
0 
I 
0 
0 
jo 
0 
0 
0 
\o 
0 
5 
5 
0 
0 
O 
0 
0 
l 
0 
0 
} 
f° 
0 
.... 
8 
0 
0 
1° 
0 
0 
0 
r 
J 
to 
0 
.... 
9 
10 
11 
12 
13 
14 
15 
1 
0 
0 
0 
0 
0 
0 
0 
jo 
0 
i 
0 
0 
lo 
0 
i ■ 
. J... 
1 
0 
0 
0 
1 
...i... 
0 
0 
0 
0 
0 
0 
1 
0 
I 0 
0 
0 
}* 
jo 
j 0 
17 
■ 18 
19 
20 
21 
22 
23 
24 
25 
26 
t 
0 
0 
(0 
0 
1 
0 
0 
0 
0 
! 
L 
/... 
75 
77 
79 
72 
66 
68 
59 
62 
i 
0 
D 
0 
0 
1 
/ 
1 B 
1 
t 
0 
10 
d 
0 
0 
t 
!... 
0 
0 
L... 
0 
0 
j 
0 
0 
? 
0 
0 
0 
0 
1 
0 
0 
j 
0 
0 
0 
D 
D 
d 
Total.... 
38 
12 
16 
49 
15 
40 
29 
40 
12 
II 
4 
12 
35 
26 
24 
11 
d 
10 
8 
4 
13 
^8 
d 
I 
1 
1 
1 The “B ” at the head of each column shows that the aphid was bom on the date indicated. 
2 The. “ D * ’ i mm ediately following each column of figures shows that the aphid died on the date indicated. 
The total number of young for each female is given at the foot of each column. 
