58 
winter season. Hence there are several broods a vear, a condi- 
tion which adds greatly to its efficiency in reducing the Anomala 
erubs in the canefields of Hawaii. 
Fig. 24. Young S. manilae 
larva on Anomala grub, 
5 (after Swezey). 

The wasp was bred in large num- 
bers at Los Banos for shipment to 
Honolulu, Hawaii. Approximately 
100 females, each kept separately 
in a jelly tumbler, were used for 
breeding. Each tumbler was half 
filled with soil, into which was 
placed daily an Adoretus grub, and 
a sprig of “‘Cucharitas’” moistened 
with water and honey furnished 
food for the Scolia, All apparatus 
were kept on ant-proof shelves and 
tables. The Adoretus grubs in the 
tumblers were examined daily, 
uusally in the morning, and it was 
found that on an average about 
50% were parasitized, though some 
which had been stung had no Scolia 
egg upon them. Each parasitized 
grub was placed on its back in a 
clay cell, which was then plugged 
up and placed in soil in a tightly- 
closing’ varnish can. The ‘latter 
packed in a box or basket were then 
ready for shipment. 
The mortality of the wasps in 
the tumblers was not great. The 
larger number lived several weeks 
in these unnatural conditions and 
we have a record of one female 
living for 79 days. Sometimes both 
grub and wasp would succumb to 
fungous diseases. While some of 
these wasps would lay quite satisfactorily others laid very few 
eggs. The one that lived for 79 days in captivity laid 52 eggs, 
the largest number recorded. 
Granting an abundance of grubs 
and no accidents in the natural outdoor life, Scolia manilae may 
well lay over 50 eggs during her existence. 
experiments have shown that an unfertilized female may lay 
eggs that will develop into adult wasps, but thus far only a 
few males have been reared. 
On the Island of Oahu, Hawaii, where this insect has been 
