3 
REPORT ON THE PADI-BORER. 81 
able throughout the year for the sustenance of the successive 
broods of caterpillars. 
A consideration of these facts, as well as of the life history 
of the borer, leads to the conclusion that the method which is 
most likely to keep down its numbers, is to destroy the straw 
by fire as soon after the harvest as possible, and to take any 
measures that will tend to kill or prevent the growth of the 
self-sown rice, between the harvest and the next year’s sowing. 
With the efficient help which is given by the parasitic fly 
| have already mentioned, there should not be much difficulty 
in comparatively freeing the padi fields of this very destruc- 
tive scourge, if the cultivators could only be induced to take 
a little united action. 
: * ee WERANS JR, 
Curator, Pérak Museum. 
ADDENDA. 
Since the above was written, further research has brought 
to light another insect associated with the one I have already 
described, and of almost the same habits and general appear- 
ance. In fact so close is the resemblance that it was not until 
the change from the larva state took place, that I noticed any 
difference ; except that the caterpillar was nearly uniform pale 
brownish pink and without the five-purplish longitudinal stripes. 
This was unfortunate, as I did not make a close examination 
or take down a description of this stage of the borer. : 
The other stages of its life were, however, recorded, and are 
as follows :— 
Pupa.—Colour pale brown, darker at head, tail and margins 
of joints, with a white bloom oyer the whole. Head only 
slightly bent forward, its front somewhat rounded. Eyes pro- 
jecting, black. Thorax minutely pitted. Abdominal joints 
also minutely pitted and with dark brown depressed spots 
scattered irregularly over them, more thickly on their anterior 
halves. Stigmata projecting. Tip of last joint rounded with 
