92 
PLUM. 
The methods of prevention advised consist of shaking down the 
little beetles, and destroying them ; or digging holes, and filling these 
with pieces of boughs or twigs from their food-plants, such as will 
attract the beetle, which, it is advised, should be cleared out and killed 
every morning. 
Looking, however, to the circumstance of the beetles being wing¬ 
less, it would perhaps answer better to smear round the base of the 
stems with any composition known to be safe for the tree, and thus 
catch them on their upward road. Probably this is a case in which 
spraying with emerald-green, or Paris-green, which is the same thing, 
would, as with the Willows at Lymm (see p. 75), do much good. 
PLUM. 
“Shot-borer.” “Apple-bark Beetle.” “Pear-blight,” Xyleborus 
dispar, Fab.; Bostrichus dispar, Fab.; Xyleborus pyri, Peck (of 
American writers). 
Xyleborus dispar. 
Male and female beetle, magnified; lines showing nat. length. Plum-stems, 
showing horizontal and perpendicular galleries. 
The following observations refer to the serious, and often rapidly 
fatal, injury caused to young Plum-trees by the Xyleborus dispar , or 
“ Shot-borer,” a very small dark brown beetle, which had previously 
