SUMMARY OF THE REPORT ON THE POMEL&9E MOTH. 885 
pinkish bronze. The four anterior segments being less tinted 
than the remainder, the young are almost whelly of a rather 
dull pink. Length of adult .86 inch, breadth .!5 inch. 
Pupa.—General colour warm brown, darkening towards 
the tail, wing sheaths dull green for the first tiew days, after 
which they become dark brown. A dark mivlian line from 
tail to thorax on the dorsal aspect. Length .§ inch breadth 
Sly ime. : 
EFFECT ON THE FRUIT: 
The caterpillar of the pomeloe moth is able to pierce un- 
injured the natural defences of the fruit, disregarding both 
the pungent oil of the rind, and the thick layer of pith be- 
neath it, it reaches the cellular portion of the fruit, which it 
tunnels through and through in all directions passing through 
and through in all directions, passing through the seeds if 
they happen to be in its line, but apparently not seeking 
them out. Fecal matter is deposited in the burrows, and 
decomposition as a consequence quickly sets in on its walls. 
Under the microscope, the fluid contents of any cell which 
has had its containing sac broken by the passage of the cater- 
pillar is seen to be teeming with bacterial life of many kinds. 
Carefully detaching a sac adjoining one that had been broken 
by a caterpillar, but which was in itself quite perfect, and 
microscopically examining its contained fluid, there appeared 
many bacteria. The most frequent form being masses of 
cocci; many other forms were present, but in smaller numbers. 
An oval saccharomyces was very plentiful in the injured 
cells, and is the probable cause of the acid fermentation which 
takes place in them. It was not present in the adjoining un- 
broken ones. Presumably the smaller forms only can pass 
from cell to cell through the connecting vessels. 
It is probably to this secondary attack of micro-organisms 
that the premature ripening and falling of the fruit may be 
ascribed, more than to the actual injury done by the cater- 
pillars themselves; other insects taking advantage of the holes 
made by the caterpillars through the rind can enter the fruit 
