THE AUSTRALIAN NATURALIST. 11 
LIFE HISTORY OF GONIOZUS ANTIPODUM. 
By L. Gauarp. 
On examining some bandages taken from quince trees at 
Eastwood on March, 1921, I noticed a clump of small yellow 
oblong larvae in a place where a Peach Tip Moth larva had 
been spun up. On examination they were found to be the 
larvae of a small wasp, while in another cocoon, which had 
torn open, was a row of seven of these tiny creatures with 
their heads buried into a Peach Tip grub, which they had 
almost sucked to a skin. A little later I found the adult wasp 
right in the inside of a cocoon. On examining the grub I 
found three fresh laid oblong glassy eggs, and two tiny little 
larvae sticking to it. A further search in the same bandage 
revealed another adult. I submitted the adult to Mr. Frog- 
gatt, and he has kindly identified it as Goniozus antipodum. 
This is a small black antlike wasp, with a pointed abdomen and 
plain wings. It is not an internal parasite. The young larvae. 
when hatched, attach themselves to the host, and there hang 
until they have sucked it dry. By this time they are ready to 
pupate. They then spin a small white loose cocoon around 
themselves, and await their change. I secured a photo of a 
group of four, which had attached themselves to a Peach Tip 
grub. A copy of this, and a tube showing the full life history 
of the wasp, from egg to adult, I am placing on the table to- 
night for inspection. The specimens in the tube are all alive. 
This tiny little friend should be weleomed heartily by every one 
who grows a Peach tree. 
NOTES ON PORISMUS STRIGATUS. 
By L. Gauuarp. 
On March 3rd on examining a jar in which I had put away 
a larva of Porismus strigatus the dark painted winged Osmylid 
on October 10, 1920, I noticed the riymphe form had just 
crawled out of the cocoon. In about ten minutes the pupal 
skin burst at the thorax, and the adult began its struggle for 
freedom. By a series of pulsations it forced it way out. This 
took about 20 minutes. The head was doubled in under the 
thorax, and it seemed to be haying a hard struggle to draw 
the long antennae free. When at last it succeeded the an- 
tennae and anal segment liberated themselves almost simul- 
