SAN FRANCISCO GARTER SNAKE
Thamnophis sirtalis tetrataenia

Thamnophis sirtalis tetrataenia  from  San  Mateo  County,  Ca.                                                                  Photo by Patrick H. Briggs

Thamnophis sirtalis tetrataenia (Juvenile)  from San Mateo Co., California                                                   Photo by Patrick H. Briggs

Thamnophis sirtalis tetrataenia from San Mateo Co., California                                                                  Photo by Patrick H. Briggs

Distribution:  This species occurs on the San Francisco peninsula of California in the extreme southern portion of San Francisco County, in San Mateo County, and there is one record from Santa Cruz County. Legal Status:  Thamnophis sirtalis tetrataenia is listed as an Endangered Species by both the Federal Government and by the State of California.

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