April, 1917. The Queensland Naturalist. • 51 
coriaceous cocoon, very different in texture to that of 
Eupcecila australasicB, jrontalis, and others. As the cocoons 
of these large cetonids were not cut open for fear of affecting 
the transformation, the exact period of change to pupa is 
a matter of conjecture. The beetle usually appears here 
late in January, and thence onward to March. It is very 
rare round Brisbane, bu^ not uncommon in the CentrM 
districts of Queensland. The insect affects other trees, 
usually Eucalyptus, and our first capture of them in the 
cocoons was from a large fallen gum, in a decayed spout of 
which were about 20, all but three destroyed in the fall. 
The beetle has several times been captured about the garden 
of our home at Bulimba, and each time in a somewhat comatose 
state. One picked up was covered with ants, though still 
alive. After brushing off the ants, it was put in a large glass 
topped collecting box, and remained alive many days, but 
very lethargic. Had they been healthy, they would not 
have been so easily taken, being strong fliers, and noisy on 
the wing. Their usual haunts are high up on trees, probably 
among the blossoms, as is the habit generally of most of our 
local cetonid beetles. A clue as to the deposition of the 
ova of these beetles may be found in some remarks in this 
paper on Trichaulax trichopyga. 
Eupcecila australasice. — In the same moribund Flacourtia 
were also larvse and cocoons of the common cetonid Eupcecila 
ausiralasice . This insect’s larvse and cocoons are found in all 
kinds of decaying wood, old fences being sometimes nurseries 
of them. It will not touch the living timber of trees, but 
is partial to the driest and hardest of dead wood. 
Lamprima latreillii and Lamprima splendent. — Affecting 
this tree also was the splendid Lamprima splendens, a member 
of the Lucanidee or stag beetles. The larva does not make 
a cocoon, but forms a chamber in the wood for pupation. 
Some of these chambers were so far in that it is a wonder 
the beetle ever sees the light of day. The grub, like those 
of the cetonids described, is useful in assisting the decay 
of dying or already fallen trees, and does not confine itself 
to any particular timber, though it is specially noticeable 
that scrub timber produces in the male sex a large and brilliant 
green form, whereas forest wood gives us the smaller golden 
coppery insect, also of the male sex. These are merely forms 
caused by a more nutritious sustenance in the one case, 
and a drier and less rich in the other. Many of these insects 
remain in the wood as perfect beetles all through our winter 
months. 
Trichatdax concinna. — Many years ago, myself and a 
friend, whilst on a beetle hunt towards the Kelvin Grove 
Scrub, attacked a gum tree which looked very sick, and was 
