GENUINE SNOUT-BEETLES. 191 



culor ; then they collapse and become black, eventually forming a 

 small, dried, black mass, utterly indistinguishable in character." 



We have a number of very noxious snout-beetles which kill 

 our pine trees. Only one will be mentioned and illustrated, (Fig. 

 200), to show its shape. It is the White Pine Weevil, {Pissodes 

 strobi Peck). It is one of the most serious enemies to that tree, 

 attacking the leading shoots in young trees, and spoiling their 

 shape entirely. In our extensive pine forests no remedy can even 

 be suggested, but in parks and gardens the small ornamental 

 trees of this kind can be protected to some extent by spraying the 



Fig. 201. — European species of Fig. 202. — Hylobius confusua, Kby.- 



Pissodes. After Bretam. After Brehin. 



leading shoots with carbolated soap-wash, to which Paris-green is 

 added at the rate of one pound to one hundred and fifty gallons 

 of water (Smith). Of course the infested shoots should be gath- 

 ered and burned. Fig. 201 shows a closely related European 

 species. 



Equally bad are Pissodes affinis Rand., and Hylobius con- 

 fusus Kby. (Fig. 202). 



Another group of snout-beetles is composed of very elon- 

 gate and slender insects, some of which are injurious to 

 garden plants, and on that account one of them is shown in the 

 illustration (Fig. 203). It is the Rhubarb-beetle, (Lixus conca- 

 vus Say). This beetle is found early in the season on the leaves 

 and stems of the rhubarb, but is also found on those of wild plants, 

 as on the larger species of Rumex. This long, cylindrical beetle, 

 with a thick snout about as long as the head and thorax, is en- 

 tirely covered with a rusty powder, which rubs off very easily, 



