132 Bulletin de la Société Royale Entomologique d'Egypte 
out the day before or the day after the generali hatch¬ 
ing. On the other hand there is no rule for unfer¬ 
tilized egg-cases, equally large or nearly equally large 
numbers of young may emerge on two successive 
days or with an interval of one day between the two 
emergences. 
Fabre (1911) p. 33 1, states that the young of 
Mantis religiosa do not emerge simultaneously but 
in batches which may be separated by intervals of 
two or more days. As we have already pointed out in 
papers referred to in the previous part of this note, 
this is not in accordance with our observations in 
Egypt, so far as the Mantinae are concerned, at any 
rate in the great majority of the normally fertilized 
egg-cases. Out of 101 egg-cases laid by the mother 
and her fertilized daughters, there were only 20 from 
Avhich the young did not hatch simultaneously. Out 
of these there were 2 with* one, 5 with two, 2 with 
three and 1 with four stragglers which hatched either 
later in the day or on the previous or following day. 
Of the remainder there were 6 from which less than 
20 % did not emerge with the main batch, 3 from 
which about 3 o % were late and only one from 
which 4o % emerged the day before the remainder. 
Including the broken egg-case referred to above, 
there were only 5 cases in which young emerged on 
more than two occasions. 
Although M. religiosa has been found in the 
North of France, Fabre ’s country is near the limit 
of its range and, according to him, it is only about 
the middle of June that young begin to hatch from 
the cases laid in the preceding year. In Egypt young 
