Swallowtail Butterfly

My blip came and found me early this morning, while I was moving some plants that were shriveling up in the Florida sun. I am pretty sure this is a Palamedes Swallowtail, but it might be a Black Swallowtail. Both are very common in the wooded or evergreen swamps, the edge of forests and suburban gardens of Florida. The Palamedes is the larger and this one was a good 31/2 to 4 inches across. I was lucky that he was posing for me; as a rule he flutters by, just out of range.