SPHZEROTRYPES COIMBATORENSIS, n. sp+ 397 
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-to have been evidently done during the year, it was not fresh 
enough to have been that of the beetles then swarming in the 
‘forest, The exit holes made by the beetles had had time to dry 
and shrivel round their edges, and the boring was no longer 
fresh and clean. I consider it probable that the poles had 
been attacked in April, soon after being felled, and eggs laid 
in them. The beetles maturing from these eggs probably 
issued some time in June and at once laid eggs in other trees, 
the poles in which they themselves had matured having become 
too dry to afford food of the nature required by the larve. 
These would be the eggs of the second generation, and beetles 
from them would appear in August. This theory was entirely 
supported by the writer finding beetles and larvee in some newly- 
felled poles on the 6th of that month, The insects had settled 
upon these poles, which were unbarked, in a swarm and the 
‘bark was pitted with their entrance holes. Beneath they 
were to be found in various stages of egg-laying. In some 
_cases but one beetle was present, having just bored down to the 
-cambium layer. In others two were to be found in the chamber, 
whilst in others againthe egg-gallery had been commenced, or in 
some cases partially completed, the eggs first laid (at the bottom 
end) having already hatched out. These beetles were evidently 
‘not those of the generation which had attacked the April poles, 
‘since they had obviously but just left the tree in which they 
thad matured, and we have seen that the exit holes in the 
April poles had dried-up edges. I therefore conclude that 
they belonged to an intermediate generation, probably the 
second of the year, and were laying the eggs of a third. 
The beetles evidently leave the trees together when mature 
_and fly off in a swarm in search of trees in a suitable condition 
for egg-laying. 
Locality from where reported. 
This insect was discovered by the writer in the North 
‘Coimbatore Hill Forests in the Madras Presidency. Elevation 
-about 1800 feet. 
Relations to the Fores 
As far as observations have been at present carried, it would 
_appear that this beetle is capable of making itself felt as a 
