203 
A further note on the life history of 
SCOLYTUS MAJOR, MS. 1+? | 
Plate XI. 
References : —Provisionally named Scolytus major, MS. Scolytus Sp. see) 
No. 1 of these Notes, pp. 45—48, and PI. IV, fig. 4, a, 4, ¢. : 

Tree attacked :—Cedrus Deodara (Deodar). 
This beetle infests trees of all ages from the largest to quite 
young saplings. In these latter it is to be found near the base 
of the stem. It is therefore always found in company with the 
smaller Scolytus, Scolytus minor, MS., being only absent in the 
tops of young saplings. In poles and saplings, when possible, 
it enters the tree beneath a branch as described below in the 
case of its smaller companion, Failing branches, it chooses 
some flake of bark or inequality on the stem and burrows 
beneath it. It is generally the more numerous of the two 
beetles. 
The number of developing eggs is between 60 and 70. At 
times the number may be more or less. The first eggs laid by 
the beetle hatch out before it has finished the egg gallery, the 
time passed in the egg stage being probably from 4 to 7 days. 
The egg is spherical in shape, yellow in colour and shining. 
It is wrapped up in what appears to be filamentous wood 
shavings. 
The Jarva, on first hatching out, is a minute ‘little white dot. 
The curved shape is, however, easily recognizable by the time 
it has bored about $ inch away from the egg gallery. The 
larval life of the first generation is about 4 weeks from leaving 
the egg to pupation. 
Pupation takes place partly in the wood and partly in the 
bark except in the case of the smaller saplings, when it may 
occasionally take place entirely in the wood, the larva boring 
into the sapwood at or near the end of its gallery. The larva 
pupates about the last week in June. 
Plate XI shows a complete plan of the galleries made by 
this insect: 4 a@a@ is the egg gallery, 40... are the larval 
