fact, when we inform them, that small as it is, it 

 is no other than the silent, insidious destroyer 

 of the peach-tree. 



The sexes are so remarkably different from 

 each other, that we should hesitate in yielding 

 our assent to their specific unity, if we were not 

 apprised of the circumstance, that the sexes of 

 many of the species are very unlike each other. 

 In the present instance, the difference is so great, 

 as to render it difficult to construct a good com- 

 mon specific character. 



We are indebted to Mr. James Worth, a 

 zealous and careful observer, for the principal 

 part of the accurate information which we possess 

 relative to this formidable insect. The following 

 observations are extracted from a valuable essay, 

 by that gentleman, published in the volume 

 quoted above. 



The egg deposited on the side of a glass 

 tumbler, was oblong-oval, dull yellow, and so 

 small as to be only just discernible by the naked 

 eye. Excepting in a state of confinement, he 

 never saw the female at rest, but in one instance, 

 when she was perched on a leaf, which may 

 possibly be the usual place of deposit, though he 

 is inclined to believe that it is made on some 

 part of the trunk of the tree. The larva is of 



PLATE XIX. 



