222 SCOLYTUS DEODARA, MS. 
chamber slightly larger than the gallery and pupate in this. 
The beetle on maturing bores its way out by a horizontal hole 
through the bark. At present [ have never-obtained more than 
one beetle from any one attacked branch, although more than 
one larva hatches out and bores up the stem (PI. X, fig. 5, b). 
The life cycle ofthe first generation of the year takes from 6 to 7 
weeks from egg to beetle. From branches found freshly girdled 
on July 3rd the writer bred out beetles in the latter part of 
August. The larval stage of this generation probably lasts about 
4 weeks. It is possible that the beetle commences egg-laying so 
late in the vear, z.¢,, after or at the commencement of the first 
rains in order that the girdled branch may remain fresh for a 
sufficiently long time to enable the larvae to become full grown 
and change into the pupal state before it withers to any great 
extent, since it is evident that the grub requires fresh cambium 
and sapwood for its food. Occasionally the same branch will 
be found to have been girdled twice probably by different 
beetles, but this is not common. PI. XII, fig. 2, A, shows an 
instance of the branch being girdled at 1 ana 2. 
I am of opinion that there is likely to- be at least one more 
generation of this insect in the year, the August beetles pro- 
bably girdling branches and laying eggs in them as soon as 
they issue, The exact number of generations in the year has 
however yet to be worked out. 
Localities from where reported. 
These beetles or the results of their work have been observed 
to be plentiful in the pure deodar woods in the Jaunsar and por- 
tions of the Simla Hill States Divisions in the N. W. Himalayas. 
Their attacks have been more especially noticeable at Kathian 
and Deota in the Jaunsar Division and in the Cheog Forest near 
Simla and in the deodar forest at the head of the Simla water- 
works. 
Mr. Lace, whilst in charge of the Chamba Division, Punjab, 
noticed that deodar branches were girdled by an insect, and the 
beetles he obtained appear to be the same as the one under 
consideration, 

