Peter, thank you for posting the question and photos.  

We were in northern NH earlier this month not that far from where you were (Dartmouth College Grant), and we saw lots of commas and struggled with the IDs ourselves.  We think that we were seeing mostly Green Commas, but they didn't look like the one in your photos.  We're wondering if yours might be an Eastern Comma.

The ones we saw had very jagged wing edges, had the innermost dot on the upper forewing dot band doubled across the vein , and had bright yellow chevrons on the upper forewing, .  Most had green markings on the underwings, but that was only visible in good light.

I'm attaching photos I took of one that we saw and decided was a Green, just in case anybody else wants to weigh in on this.  (This guy was very friendly and insisted on landing on us, staying on us even as we walked!)  We're finding that comma ID is not all that straightforward, but we enjoy the challenge and welcome further discussion!

Terry Rosenmeier
Karen Kluge
Hanover, NH

========================
Can anyone confirm the I.D. of this butterfly (see images) I found it
yesterday on Big Brook rd in Pittsburg N.H. (I know it's not VT but where
else can I find the answer?) I think it's a Green Comma and just want to
make sure.I was going back and forth between Green and Hoary Comma. Tails
not right for a Gray to me, Gray's tail is much darker and fancier alone the
edge.
Thanks in advance for the help!

 Also seen up there:

Morning Cloak   hundreds of them everywhere,   over 80 on Big Brook rd
alone, this was an         amazing site. I think they must have just hatched
on Tuesday , they all looked brand new

Red Admiral  7
Monarch  1
Cabbage White  15++
Orange Sulfur  3

Peter Manship
Ludlow Vt