been brought by shipping to our shores, where it had 

 not been seen before the arrival of Europeans. The 

 sugar-mite,* a native of the West Indies, is now rather 

 common in Europe and America. The violet-colored 

 borer f of the pine, originally indigenous to our forests, 

 is now naturalized in Europe, having been carried 

 thither in timber from America ; while, in return, we 

 have received from thence another pine-eating borer, % 

 whose mischievous powers render it a formidable 

 assailant of wooden edifices. This insect, we are in- 

 formed by Kirby and Spence, ^ does material injury 

 to the wood-work of houses in London, by piercing 

 the rafters in every direction. Its stomach seems to 

 have the insensibility of that of an ostrich, and its jaws 

 the strength of iron nippers ; for it has been known to 

 perforate sheets of lead, one sixth of an inch in 

 thickness, with which roofs were covered, and in its 

 stomach fragments of the metal were discovered. The 

 pea-bug II of America is now found in England and a 

 part of the continent of Europe. The minute beetle, H 

 so common in ship-bread, is a native of Europe ; it is 

 often seen in our vessels, and occasionally on shore. 

 The notorious poplar- worm,** a spiny caterpillar, whose 

 falsely reputed venomous powers caused almost the 

 extermination of the Lombardy poplar some years ago, 

 is not indigenous to this country, but was probably in- 

 troduced with the tree it naturally inhabits, but which 



* Lepisma sacchmina. L. f Callidium violaceum. L. 



J Callidium bajulum. L. 



§ « Outlines of Entomology." (3d ed.) Vol. I. pp. 235, 236, note. 

 II Bruchus Pisi. L. U Anobium panicewm. P, 



** The larva of the PapUio Jlntiopa. L. 



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