Head drawings: genus Sonora(Serpentes: Colubridae) - compiled by Van Wallach Home

Sonora aemula (from Bogert & Oliver 1945)
Sonora aemula (from Cope 1900)
Sonora annulata (from Holycross & Mitchell 2020)
Sonora cincta (from Grismer & al. 2002)
Sonora cincta (from Holm 2008)
Sonora cincta (from Holycross & Mitchell 2020)
Sonora cincta (from Powell & al. 2019)
Sonora cincta (from Schmidt & Davis 1941)
Sonora cincta (from Stebbins 1954)
Sonora episcopa (from Schmidt & Davis 1941)
Sonora episcopa (from Cope 1900)
Sonora episcopa (from Cope 1900)
Sonora fasciata (from Cope 1900)
Sonora fasciata (from Holm 2008)
Sonora fasciata (from Holm 2008)
Sonora michoacanensis (from Günther 1885-1902)
Sonora michoacanensis (from Günther 1885-1902)
Sonora occipitalis (from Cope 1900)
Sonora occipitalis (from Lemos-Espinal & al. 2015)
Sonora occipitalis (from Powell & al. 2019)
Sonora occipitalis (from Schmidt & Davis 1941)
Sonora occipitalis (from Stebbins 1954)
Sonora occipitalis (from Zeiner & al. 1988)
Sonora palarostris (from Holycross & Mitchell 2020)
Sonora palarostris (from Powell & al. 2019)
Sonora punctatissima (from Grismer & al. 2002)
Sonora punctatissima (from Holm 2008)
Sonora punctatissima (from Holm 2008)
Sonora savagei (from Cliff 1954)
Sonora savagei (from Grismer & al. 2002)
Sonora savagei (from Holm 2008)
Sonora semiannulata (from Powell & al. 2019)
Sonora semiannulata (from Stebbins 1954)
Sonora semiannulata (from Woodbury 1931)
Sonora semiannulata (from Zeiner & al. 1988)
Sonora straminea (from Grismer & al. 2002)
Sonora straminea (from Cope 1900)
Sonora straminea (from Holm 2008)
Sonora straminea (from Cope 1900)
Sonora straminea (from Holm 2008)
Sonora taylori (from Boulenger 1894)
Sonora taylori (from Boulenger 1894)