Twelve-spotted Skimmer (Libellula pulchella)
Common Green Darner (Anax junius)
Blue-eyed Darner (Rhionaeschna multicolor)
Black Saddlebags (Tramea lacerata)
Western Pondhawk (Erythemis collocata)
In addition to the species above, I also observed Spot-winged Glider (Pantala hymenaea), Wandering Glider (Pantala flavescens), Variegated Meadowhawk (Sympetrum corruptum), and a fly-by dragonfly that was probably a Flame Skimmer (Libellula saturata). That was a total of nine species of dragonflies on Bodega Head this afternoon (my personal record is 10 species in one day on Bodega Head — see the post from 15 August 2015).