OF INJURIOUS INSECTS. 
29 
application would be much less than that of hand-picking. In the 
case of the grub of the Asparagus Beetle, which holds very firmly, I 
have found almost all dropped to a shake after syringing with hot 
water, and I killed them on the ground with soot; and I believe (with 
whatever modification might be needed as to detail) that this remedy 
would be found of use with regard to many of the bush-feeding larvae. 
SlREX GlGAS. 
29. Sirex Gigas. Giant Sirex. Mr. Matheson mentions this 
as having been rather common this year at Addington, Bucks, and 
that he has destroyed specimens in localities some miles apart. A few 
specimens were also noticed by Mr. John Upton, at Sedbury Park, 
about September 6tli. Where felled Fir timber is found to contain 
this insect it would be well worth while either to utilise the logs at 
once in such part as is sound, or else to burn them, otherwise the 
insect will probably develop from them for successive years, to the 
injury of the neighbouring live timber. 
30. Retinia, sp. Turionana, Buoliana, &c. Pine-bud Tortrices. 
Mr. Matheson mentions that the larvas of one of the Pine-bud Tortrices 
has not been as injurious at Addington, Bucks, during this season as 
was the case two or three years ago, apparently in consequence of 
careful treatment. This moth attacks the Scotch, Austrian, insignis, 
and other species of Pine, the caterpillars injuring the leading shoots 
