115 
Séance du 16 Avril 1924 
Table III gives, in the second row, the number cf 
unfertilized females which laid the various number of 
egg-cases shown in the first row. 
TABLE III. 
N° of Cases 0 
1 
2 
3 
4 
5 
6 
7 
8 
9 
10 
11 
12 
13 
Ui 
15 
16 
21 
N° of Females 16 
5 
7 
0 
3 
2 
1 
3 
2 
0 
1 
2 
0 
2 
1 
2 
1 
1 
3. The Size of the Egg-cases. 
Throughout the greater part of its length the egg- 
case of M. Savignyi is uniform in cross-section; the 
tail at the beginning may be short or fairly long and 
the residual filament at the end varies also consider¬ 
ably. Neglecting these two unessential portions, toe 
volume of an egg-case is roughly proportional to its 
length and egg-cases with equal cross-sections can 
be compared by comparing their lengths. This could 
not be done for egg-cases such as those of Mantis reli¬ 
giosa L. or Sphodromantis bioculata Burm. as can be 
seen by a glance at the plate in Adair (1914.2.; p. 37. 
The great majority of our egg-cases were laid on 
the sides or the top of the boxes in which the females 
were kept so that the base is usually flat. In a few 
cases two such surfaces were used and the base is 
divided into two flat portions at right angles to one 
another. Two or three of the egg-cases laid in the 
large cages by the fertilized females show other diver¬ 
gences from the majority, but in all these cases the 
length may still be considered as a measure of the 
size. 
