So far, the dragonflies we've seen (and identified) have been in just two categories: Darners and Skimmers. That leaves the following categories we're still hoping to see: Petaltails, Clubtails, Spiketails, Cruisers, and Emeralds. (And here are our damselflies.)
I've identified some of these with the help of BugGuide.net and others with the help of Stokes' Beginner's Guide to Dragonflies.
I'm sure this is a black saddlebag, but I'm not sure which is the female and which is the male. I'll try to figure this out, and I've submitted some photos to Odonata Central.