With Further Notes on the Pyralid Moth Borer of Cane. 
Habits of the Larva. 
Upon cutting open an affected stem and exposing the tunnelling, 
the larva, instead of seeking to retire into darkened recesses, usually 
crawls out towards the light and commences to actively traverse the 
exterior surfaces. If placed with its head in the tunnel at this time it 
refuses to take cover, even when urged to do so. A specimen put into 
a glass tube containing the stem bored by it disregarded the latter, and 
crawling with ease up the vertical glass sides burrowed at once into the 
firm plug of cotton-wool. Upon substituting a cork for the wool stopper 
it managed to squeeze under its lower edge, and when looked at a few hours 
later had started to construct a cocoon of webbing covered by tiny grains 
of cork. 
The Pupa. 
Somewhat boat-shaped, pale ochraceous, darker on dorsal surface ; 
body segments 3 to 6 with a more or less interrupted mid-dorsal brown 
stripe. Legs, antenne, head, etc., outlined in reddish. Wings reaching 
beyond fifth abdominal segment, tips of same and end of anal-segment 
reddish-brown, the latter tipped with a few short white hook-shaped 
hairs. Length 4:30 mm.; width (side view) 1 mm. (Fig. 5). 
The pupa is concealed in a frail cocoon of silk covered by excreta 
or fragments of fine debris. 
A larva that pupated 11th November produced a moth of the female 
sex fifteen days later; while another remained only ten days in the 
pupal condition, the imago emerging on 25th December, 1919. 
Again, several larve that pupated 10th January produced moths 
seven days later. 
All pupz obtained were from larve in captivity that had come 
out of shoots and transformed in crevices of breeding-cages, etc. Pupa- 
tion does not take place in the tunnels of affected ratoons, as although 
more than 200 were carefully examined no pupz were found. We may, 
I think, infer that when fully grown, the larvee leave the cane and pupate 
either in crevices of dead twisted leaves or on the ground. Specimens 
confined in cages containing damp earth pupated under debris lying 
on the surface; constructing their cocoons partly in the ground and 
covering them with tiny particles of soil. Larve that transformed in 
such situations remained about a week in the pupal condition. When 
confined in cages with dead cane leaves resting on soil covered in part 
with debris they pupated among the twisted leaves. 
Description of Moth. 
Female. 
General colour dark-grey sprinkled with white. Eyes deep-red- 
brown ; palpi conspicuous, curved upwards over face to top of head ; 
first joint large, broadly triangulate, its lower edge presenting a toothed 
appearance, remaining joints much smaller, banded with white, the 
