114 PINE. I 
Where this is in full vigour the turpentine would run into the freshly 
eaten out galleries so as to choke and destroy the eggs and maggots. 
The life-liistory has been given at length in previous Reports, but 
I repeat it again relatively to the exceedingly interesting circumstance 
Tunnellings of Pine Beetle. 
of the occurrence of this attack to Larch having recently been observed, 
for the first time on record, in such low latitudes as those of Scotland 
by Dr. Somerville.* 
In the course of the past season I was favoured by Dr. William 
Somerville, Lecturer on Forestry in the University of Edinburgh, with 
a copy of the paper read by him before the Royal Society of Edinburgh, 
on July 7tli, 1890, containing his personal observations of the workings 
of H. piniperda in his own Larches on the estate of Gorniston, in 
Lanarkshire; and by kind permission of Dr. Somerville I give the 
following extract from the paper, followed by some further observations 
with which he favoured me :— 
f 
“ The special point that I wish to bring before the Society relates to 
a case of the common Larch being made use of by Hylesinus piniperda 
for purposes of oviposition. As occasion demands, this insect has 
been found to utilise as a breeding place every species of Pinus, but, 
so far in Europe or North America, no case has been noted of any 
trees belonging to the genus Larix having been similarly attacked. In 
Asia an observer, namely, Middendorff, has recorded one case which 
came under his notice in the district of the Boganida, in Siberia, in 
71° north latitude (‘ Sibirisclie Reisen,’ Band iv. Theil i. p. 603). 
* In the ‘ Praktische Insekten Kunde,’ of Dr. E. L. Taschenberg, at p. 205 of 
pt. II, the writer adds to the mention of various kinds of Pine liable to infestation 
of this beetle, that it occurs “ high up (‘ hoch oben ’) in the north, even to the 
Larch.” 
