Séance du 16 Avril 1924 
129 
considerably ; apart from any further effect which 
virginity may have on the intervals, we must take into 
account the possible effect of the approach of winter 
In order to have data as nearly as possible comparable 
with those in table VIII, we shall consider only egg- 
cases laid in July, August and September. A complete 
table is unnecessary for the purposes of this section 
and I have selected those portions of it which give 
the shortest intervals, the maximum number of cases 
in the shortest time and the greatest regularity. These 
all fall within the groups of those which made n or 
more egg-cases. I have included one column more 
than in table VIII, the first, which gives the interval 
between the final moult and the first oviposition and 
corresponds to the first column of table IX. 
TABLE X. 
Giving the Intervals between the Final Moult « F » ani 
the First Oviposition and between Successive Ovipositions 
of:— 
a : — Seven Unfertilized Females. 
b : — N° 119, Fertilized after making 8 egg-cases. 
Column A : — Average of Intervals between Ovipositions, 
during period considered. 
» E : —< Total Number of Egg-cases laid. 
» Y :— Total Number of Young which hatched. 
No. F 1 2 3 4 5 6 7 8 9 10 11 12 A Ë Y~ 
a 
65 
17 
7 
6 
7 
7 
r 
5 
8 
6 
5 
9 
6 7 
15 
397 
15 
14 
7 
8 
6 
6 
5 
5 
9 
5 
5 
8 
8 
6.5 
13 
383 
68 
17 
7 
4 
8 
9 
6 
8 
5 
8 
6.9 
15 
340 
64 
10 
7 
4 
6 
6 
8 
7 
6 
8 
5 
6 
5 
6.2 
21 
292 
124 
22 
9 
5 
4 
7 
6 
9 
5 
6 4 
11 
226 
76 
22 
4 
5 
4 
4 
8 
6 
4 
5 
5 
6 
5 1 
14 
177 
96 
17 
11 
5 
4 
6 
7 
6 
5 
6 
6.25 
16 
171 
b 
119 
21 
15 
4 
6 
8 
r>/ 
7 
8 
13 
4 
12 
9 
7.6 
17 
167 
(The italics denote the egg-cases made after copulation 
and the bar separates those made after the end of Septem¬ 
ber) 
