LIFE HISTORY AND HABITS \ THE LARVA. 
65 
ticularly ants, and numerous larvae perish from their attack. Many 
larvae have been timed by the watch, and the interval occupied until 
out of sight belowthe soi] has varied from about one-half to 50 mini 
Table XXIV includes observations made in Georgia and in Washing- 
ton,D. C, both in the orchard and in small jars in the laboratory. It 
will be noted that more time is usually spent in .-earclnng for a suitable 
place to enter than in actually working below the surface. The 
average time on the ground and until beneath the soil, in the data 
given, is about 12 minutes. A larger series of observations would 
probably change these figures somewhat. 
Table XXIV. — Time occupied by larvx of the plum cure*/" 
Localities. 
Larva 
Xo. 
Time 
on soil. 
Be- Time 
neath occu- 
soil. 
Kind of soil. 
Myrtle. Ga.: 
Laboratory 
j 
10.00 
10.06 
10.115 
Hi 
Fr^h sandy loam soil in glass jar, 
gentlv packed. 
2 
2.07 
2.15 
2.21 
14 
Do'. 
3 
10.21 
10.21| 
10.22 
1 
Do. 
4 
9.13 
9.14 
9.15 
2 
Do. 
5 
4.12 
4 
Do. 
9.-59 
10.00" 
10.03 
4 
Do. 
. 
9.43 
9.44 
9.49 
6 
Do. 
8 
10. 22 
10. 23 
10. 24 
2 
Do. 
Q 
10. 22 
25 
10.30 
8 
Do. 
lb 
- - 
10 
Do. 
In orchard 
ii 
5.22 
5.23 
1 
Dry sandv soil under peach tree. 
"Do. 
12 
S -- 
■ - 
4 
13 
.5. 22 
.5.27 
5 
Do. 
14 
5.22 
5. 31 
9 
Do. 
15 
5. 22 
' 
_ 
Do. 
16 
5.22 
5.39 
17 
Do. 
17 
5. 22 
5.49 
27 
Do. 
Washington. D. C: 
Insectary 
18 
. 
1.29 
1.41 
14| 
Sandy garden soil in box. moder- 
- compacted. 
19 
1 
1.59 
2.19 
49 
Do. 
20 
1.48 
- 
3. 23 
35 
Do. 
21 
2.23 
- 
2.40 
'17 
Do. 
22 
. 
2.37 
2.42 
32 
Do. 
25 
2.44 
2. 46 
2 7 
3 
24 
2.2] 
2.41 
2.44 
21 
Do. 
In orchard 
25 
2.55 
2.55 
3. 11 
16 
Clav loam, well cultivated. Larva? 
placed under plum tree. 
- 
- S 
3.00 
5 
Do. 
27 
3. 33 
3.34 
3 
Do. 
28 
3. 15 
15 
Do. 
29 
3.20 
3. 22 
3. 25 
5 
no. 
30 
3. 14| 
■ 
2 
TIME SPENT IX THE FRUIT (EGO AND LARVAL >T.\ 
In 1904 Prof. Crandall determined, for Illinois, the time -pent in 
apples (combined eg^ and larval - >r 1 ,238 individual-. A few 
larvae left the fruit within 12 and 13 days from deposition of egg, and 
some -pent an unusually long time in the fruit. The great majority, 
however, developed and left the fruit in about the average time. 
Table XXV gives Ms emergence records by months, and also the 
average period per individual within fruit for that month. 
L7262°— Bull. 103—12 5 
