zacharge: Garter Snakes of the San Francisco Bay Area 1. Diablo Garter Snake (Thamnophis atratus zax
zacharge: Garter Snakes of the San Francisco Bay Area 1. Diablo Garter Snake (Thamnophis atratus zaxanthus)2. Santa Cruz Garter Snake (Thamnophis atratus atratus) 3. Coast Garter Snake (Thamnophis elegans terrestris) 4. Valley Garter Snake (Thamnophis sirtalis fitchi) 5. California Red-sided Garter Snake (Thamnophis sirtalis infernalis) 6. San Francisco Garter Snake (Thamnophis sirtalis tetrataenia) -- source link