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mis and family, and to this extent, the history of one is the history 
of all. 
In treating of the two species of Coccidce included in this report, 
the Mytilaspis conchiformis, and the M.pinifolice. I have intended 
to dwell more fully upon those points in their common structure 
and history in the one article, which I have touched upon the more 
lightly in the other, so that the two articles combined, and both 
taken in connection with the results of the labors of my predeces¬ 
sors in the same held of investigation, might present a comprehen¬ 
sive view of the subject, not perfect indeed, but somewhat approx¬ 
imating to completeness. 
I have mentioned, a few pages back, the wonderful instincts of 
the Coccus of the Pine, which prompts the female insects to im¬ 
prove the short period of their active existence, to migrate out¬ 
wards upon the terminal foliage, where they and the generation 
succeeding them will find themselves in the midst of the greenest 
and freshest forage, whilst the males which are to acquire wings, 
and the consequent power of locomotion, fix themselves indiffer¬ 
ently upon the first vacant space that offers ; thus indicating a 
kind of prophetic vision utterly beyond any reach of intelligence 
which we can reasonably attribute to beings so low in the scale of 
creation. The student of entomology is continually meeting with 
instances of this kind, which arrest his attention and excite his 
wonder, and which baffle his utmost ingenuity to explain. 
Permit me, by way of conclusion, to refer briefly to a few of 
these instances, not merely as marvellous stories, intended to ex¬ 
cite the curiosity of children, but as remarkable facts in nature, 
fraught, it may be, with a profound significance. * 
It is the common instinct of insects which are wood-borers in 
their larva state, but which have no such power in their subse¬ 
quent stages, to gnaw their way to the surface of the tree before 
they stop feeding, so that they can emerge without obstruction 
after they shall have completed their transformations. 
The Plum-gouger (Anthronomus prunicida ), whose history 
was so carefully traced by my predecessor, Mr. Walsh, and which 
in its larval period occupies not the flesh but the kernel of the 
plum, when it has completed its growth and is ready to trans¬ 
form in the kernel, takes the precaution to gnaw a round hole in 
the shell, through which it may subsequently emerge. If it did 
