SF Peninsula Vertebrates - symbiote
Probable Valley Gartersnake, Thamnophis sirtalis fitchi, Harkins Ridge Trail, Purisima Redwods OSP, 3Sept2012.  Or maybe it's a Coast Gartersnake, T. elegans terrestris (thanks for the suggestion, Lynn!).

Probable Valley Gartersnake, Thamnophis sirtalis fitchi, Harkins Ridge Trail, Purisima Redwods OSP, 3Sept2012. Or maybe it's a Coast Gartersnake, T. elegans terrestris (thanks for the suggestion, Lynn!).

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