This one was in line with my previous sightings of C. oregona.
It's hard to believe that frogs can not only live but breed on the dunes, but here's the evidence.
Tiger beetles were getting it on right and left. I've seen C. oregona previously at Abbotts Lagoon, but the white marking extending almost all around the elytral margin is making me think it might be something else...
Update: a BugGuide user reports the Pt. Reyes population may be separated into a separate species: http://bugguide.net/node/view/638496
For the record I was holding it gently, not squeezing it. It was just adamant about trying to bite me.
Excellent bloom of this species on this hillside.
You can sort of see the white undertail coverts.