ae HYPOBORUS (?) SP. 

Locality from which reported. 
This insect was discovered by the writer in the Jaunsar Divi- 
sion in the North-West Himalayas. 
Relations to the Fores?. 
The beetle appears to be fairly numerous and is of some im- 
portance in the forest owing t» the fact that it only attacks and 
lays its eggs in the green cambium of the deodar. It is thus a 
source of danger to young plants whose vitality has become 
temporarily reduced. It is an active scolytid flying readily, 
a habit somewhat unusual in the family. It apparently moves 
about in swarms since it can often be found plentifully in sickly 
branches or tops of young trees and in the branches girdled by 
the girdling scolytus. In this latter case it must be carefully 
distinguished from the Scolytus deodara the beetle which is 
the real author of the girdled branch (see p. 220). The small 
entrance holes of the Hypoborus will be found higher up the 
girdled branch generally situated at the nodes and encircled bya 
small ring of resin. In the case of old attacks they can be dis- 
tinguished from the exit holes of the Scolytus beetles by the 
much larger size of these latter. It is important to remember 
that the girdling scolytus beetle only rings the twig, lays her 
eggs at the girdle, and then leaves the branch. If this is borne 
in mind, there will be no difficulty in attributing the damage 
done in either case to the proper quarter. Of course when the 
smaller beetle attacks and lays its eggs in branches already 
girdled by the Scolytus girdler, it does no damage. 
Protection and Remedies. 
The danger from the attacks of this insect is to some extent 
minimised by the fact that whenever possible it appears to 
oviposit in the branches girdled by the deodar branch girdler. 
When, however, young growth is attacked, infested trees should 
be cut out and burnt as soon as the needles on the infested tops 
and branches are seen to be turning yellow. 
Points tn the life history requiring further observation. 
1. When does the insect make its first appearance in the 
year? 
