What Kind Of Pede Is This?

Okay, Tai-haku requested more photos of the centipede/millipede to try and figure out the strange id of the Panama bug we saw on one of our bird walks:

Here it is with the toe of my Keens as a size comparison.

Here it is with my reluctant hand model.

It didn't move nearly as fast as North American centipedes do but maybe the move slower in Central America. Whatever it was, it was huge.