Doug, that gecko was lucky it got away from the spider. It looks like one of the fishing spiders, maybe the white-banded fishing spider. Fishing spiders can get huge. Here's a site I use that has some pictures to compare with, and you can post a picture there if you want someone to give you a better idea what it is.http://bugguide.net/node/view/1985/bgimage?from=0 Tom
