118 Bulletin de la Société Royale Entomologique d'Egypte 
We shall consider the egg-cases laid by the two 
females in section ‘b’ first. It is obvious that those 
laid before copulation could be included in ‘c’, but 
they are so few that this would make no appreciable 
difference to the result. Moreover we shall see later 
that their distribution agrees very closely with that 
of the others. 
In the case of No. 33 , copulation came too late; 
only 3 young emerged from the 9th egg-case and 
none from the 10th. 
Copulation was more successful in the case of 
•the second, for 42 young emerged from the 9th and 
56 from the 10th egg-case; there were no emergences 
from the remaining 7 egg-cases. 
The effect of copulation so late in life cannot be 
determined with sufficient accuracy from such meagre 
data; we shall therefore neglect section ‘b’ altogether 
in this part of the note. 
Turning to sections ‘a’ and ‘c’, the first point 
that strikes us is that none of the egg-cases made by 
fertilized females are more than 25 mm. long. On 
looking further into the details of large egg-cases laid 
by the unfertilized females, I find that 10 out of the 
1 3 are the first laid, 2 are the second and one is the 
third. Now the first egg-cases laid by fertilized fe¬ 
males were not labelled and appear in the mixed 
group ‘X’ given in the last line of table IV. It might 
therefore appear that some or all of the 6 large egg- 
cases were the first or second laid by the fertilized 
females and that the first egg-case is in general larger 
than the others. This is not the case, however, for on 
