Séance du 16 Avril 19Z4 
121 
and the five fertilized are fairly distributed over that 
period, the dates of the month on which they moulted 
for the last time being:— i, 2, 2, i4 and 27 respec¬ 
tively. 
In table VI, I have arranged the 4 o egg-cases in 
groups according to the number of days between the 
last moult and the first oviposition. It is at once 
obvious that virginity lengthens this period very con- 
siderablv. 
1/ 
TABLE VI. 
Giving, in the second row, the number of First Egg- 
cases laid after the intervals, in days, indicated in the 
first row:— 
(( a » by fertilized, « b » by unfertilized females. 
a 
days 
8 
9 
10 
11 
cases 
1 
2 
1 
1 
b 
days 
10 
14 
15 
16 
17 
18 
19 
20 
21 
22 
23 
25 
28 
31 
32 
33 
38 
67 
cases 
2 
1 
1 
2 
7 
3 
2 
2 
2 
emt 
3 
2 
1 
1 
1 
1 
1 
1 
Out of 35 egg-cases in £ b’, only 2 fall within the 
period included in ‘a’. These were laid by N os 33 
and 64 which made 10 and 21 egg-cases respectively; 
young emerged from both. 
I have already pointed out, (1914. 2) p. 28, that 
Fischerici baetica Rambur can delay oviposition even 
after fertilization and that M. Savignyi can interrupt 
the act and complete it later; in this paper in the case 
of N° 125 on the following day and previously. 
(1914.1), pp. 120-121, after a few hours. 
