245 
My observations are not complete in either the one species 
attacking Palaquium, ( Rhodoneura myrtoea var: fenestrata ) or the 
two (a Tortricid and a Tineid ) which confine their depredations 
to Afzelia. 
Many interesting and important points connected with the life 
history of these insect pests require yet to be investigated. Their 
natural enemies parasitic or otherwise have not been studied owing 
to the lack of time at my disposal for this work. Before the elucida- 
tion of these essential points, any remedial measure should be 
considered as tentative, although the cure suggested may finally 
prove to be the soundest and the cheapest*. 
The majority of planted Gutta Percha trees are between 2-4 years 
old, these being the ones that are chiefly suffering; the older ones 
however do not by any means remain untouched. 
With regard to the parasites, I have observed several species of 
Ichneum'nidse hovering round the leaf houses constructed by 
Rhodoneura myrtoea var: fenestrata, and it is highly probable that 
the eggs are parasitised to some extent by other Parasitic Hymenof- 
tera. 
The sudden increase of these pests is in all probability due to the 
cutting away of the undergrowth, thus interfering with their food 
plants, and by supplying other trees which it seems evident are 
better suited as a food for these pests, and favourable to their 
multiplication. 
GUTTA PERCHA PEST. 
Rhodoneura myrtoea var : fenestrata. Drury . 
Description^ 
In the “’slands Planfentiun LXIV door, Dr, J. C. KONINGSBERGER” 
a few species attacking Palaquium are dealt with, and among these 
is the species with which we are chiefly concerned here viz: Rkodo- 
neur 1 myrtoea var: fenestrata. On plate 3 Fig. 24, he figures this 
insect, and on plate 5 Fig. 2 a sketch of a rolled leaf is given. 
Though the eggs of this insect have not been found I am of 
opinion that comparatively old leaves are chosen for oviposition, the 
larvae on hatching making their way to the various shoots of the 
tree. On many occasions I have obtained young larvae that have 
hatched but a few hours previously, and have found on examining 
the other shoots of the tree that they also have become tenanted. It 
may therefore be safely said that almost immediately after hatching 
the larvae disperse, and an abode having been selected, mining 
operations are at once begun. 
A not uncommon occurrence is to find two larvae contained within 
a single bud, this condition being due to the number of young 
shoots being insufficient to accommodate separately the larvae that 
may have hatched from the eggs laid on the tree. 
