Based upon its cranial characteristics, I believe this unfortunate lagomorph was a marsh rabbit,
Sylvilagus palustris. Provided, of course, that my reference book,
Wild Mammals of North America, edited by Chapman and Feldhamer, is correct. The habitat was also more suitable to a marsh rabbit than an eastern cottontail...
I have always been curious about that set of "pegged" teeth behind the upper incisors...
One of these days I may actually get around to doing a little reading about those teeth -- but not today.

A side note...yesterday I mentioned the OLF in my post. Today, when I checked my site meter, I discovered the Navy had visited my blog -- four times, beginning with that post. Could be coincidence, could be something else. Either way, I find it interesting...