SOME FIELD NOTES ON QUEENSLAND INSECTS.— HACKEE. 
97 
impregnable against the attacks of enemies from the outside, whilst it enabled 
the mature wasp inside to push its way out without much difficulty. 
Most of the tunnels exposed by splitting the log contained either a larva 
or a pupa. In two instances tunnels contained a fully developed wasp ready 
to emerge. In some of the tunnels, however, the matured insect had already 
emerged. In these cases a small quantity of loose grass-seed remained in the 
part where it had been packed loosely, while the entrance was quite open. From 
this I concluded that the insect, in order to escape, had forced its way past the 
loosely packed seeds and pushed out bodily the tightly packed plug at the 
entrance. 
R. E. Turner states* — “This species seems to occur throughout Southern 
Asia and also in West Australia.” It would be interesting to know if this 
insect has a similar economy in Asia, or whether it has acquired the above habits 
only in Australia. 
The Director of the Queensland Museum is indebted to Professor 
Skertchly for drawing his attention to these insects in the first place. 
Supeefamily VESPOIDEA. 
Family POMPILIDaE. 
Pseudagenia Camilla, Turner. — A number of the clay cells of this species 
were obtained in Victoria Park, Brisbane, on May 24th. They were all attached 
a few inches above the ground to the sides of large stones where the slope was 
sufficient to give them shade and shelter. Most of the cells were placed singly. 
In some cases there were two and three together, fastened side by side, but 
never more than three. They were oval in shape, 14 mm. long and 7 mm. broad, 
being very neatly and symmetrically made with small pellets, which gave 
them a granulated appearance. On opening one of the cells it was found to 
contain a pupa enclosed in a thin transparent skin. The wasps emerged between 
the 6th and 12th of June. They eat a small circular hole in the end of the cell 
just large enough to enable them to escape. After emerging, they rest for a 
few minutes on the outside of the cell, but soon become very active, running and 
flying about the jar in which they were confined. 
This wasp is easily identified by the shape of the clypeus, which is 
produced at the apex into a long blunt tooth. This character at once separates 
it from the other species of the genus. 
Family THYNNIDyE. 
During last season I paid special attention to the wasps belonging to the 
above family, the total number collected in the Brisbane district being seventy- 
five species. Out of forty species which have been examined by R. E. Turner, 
* Proc. ZooL Soc. Lond. 1908, p. 467. : 
G 
