772 
ANNUAL REPORT OF NEW YORK 
MIDGE. FLY. THE TEIWLET DESCRIBED. 
post-costal nervure at the point where he thinks he has seen that 
transverse nervure. This, we think, has been the cause of his 
error. This kind of elbow appears also in our European speci¬ 
mens, but it is plain that the transverse nervure supposed by M. 
Fitch to occur here, does not exist. M. Curtis, moreover, has not 
figured it, as we have already said in our communication relative 
to this subject. Will M. Fitch vouch, after a new examination, 
that it does really exist ? In that case, he will also state, we 
doubt not, why neither M. Curtis, M. Lucas, nor I, have seen it.” 
As the all-important, point, the identity of our insect with 
that of Europe, was so fully settled by this communication! and 
as my attention was at that period wholly occupied with the 
insects on fruit and forest trees, from which I expected in one or 
two seasons to pass again to those on grain crops, I deferred the 
examination to which I was invited by M. Amyot’s closing re¬ 
marks, until I should reach this subject, and have fresh speci¬ 
mens in my hands, like those from which my figures'were origi¬ 
nally taken. Hereby the proposed examination has come to be 
deferred much longer than I anticipated ; but fortunately, by 
this delay, additional materials have come into my hands, where¬ 
by I have now been able to render it more complete and satis¬ 
factory than I could have done at any previous period. 
That the common reader may distinctly understand the sub¬ 
ject under consideration, let him turn to the enlarged figures of 
wings on plate ii, figs. 5 and 18. You here see a vein repre¬ 
sented as running straight to the end of the wing. This is what 
I have termed the middle or post-costal vein. At one point 
towards its base you notice it is slightly bent, like your elbow 
when your arm is held almost straight, and hereby this middle 
vein, as it runs backward from its commencement, slightly 
approaches the side of the wing till it comes to this bond or 
elbow, after which it gradually recedes from the side. And 
from this elbow you see a small veinlet or cross-vein is repre¬ 
sented as running to the side of the wing, or rather to the outer 
vein, which so closely approximates the side that it appears 
merely as a split in the vein or rib which forms the outer edge 
of the wing. This cross-vein is tho same in these figures now as 
it was originally, except that I have directed the engraver to 
make it more small and slender, and I have not yet seen the 
revised proofs of the plate thus amended. 
