108 Bulletin de la Société lioyale Entomologique d'Egypte 
be considered! satisfactory, but we think that a mixed 
diet, including small orthoptera, would give better 
results. 
These i 54 all emerged from the last n egg-cases 
out of 14 which were made by a green female caught 
on our balcony at Shubra on January 20th. 1916. The 
first egg-case was made on 23.1.16, the second 29 
days later, on 21.2.16, the third 12 days later, on 
4.3.16, after which the layings were more frequent 
with an average of 8 days between successive ovi- 
positions. The last egg-case was made on 3 o. 5 .i 6 and 
the mother died on 12.6.16. From these i 4 egg-cases 
836 young hatched. It was quite impossible to bring 
up such a large number and to keep accurate records 
for each, so we contented ourselves with taking a few 
at random. 
We shall consider the effect of virginity on 
females and their progeny under the following 
heads :— 
1. 
2. 
3 . 
4 - 
5. 
6 . 
r- 
/• 
8 . 
ìl¬ 
io. 
11. 
The longevity of the females. 
The number of egg-cases laid. 
The size of the egg-cases. 
The period before egg-laying begins. 
The intervals between successive oviposi¬ 
tions. 
The number of young which hatch out. 
Hatching. 
The incubation period. 
The viability of the offspring. 
The sex of the progeny. 
The rate of development. 
