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

Siphlophis ayauma (from Sheehy & al. 2014)
Siphlophis cervinus (from Amaral 1976)
Siphlophis cervinus (from Chippaux 1986)
Siphlophis cervinus (from Duellman 2005)
Siphlophis cervinus (from Griffin 1916)
Siphlophis cervinus (from Pérez-Santos & Moreno 1988)
Siphlophis cervinus (from Hoge 1964A)
Siphlophis cervinus (from Hoge 1964A)
Siphlophis compressus (from Chippaux 1986)
Siphlophis compressus (from Duellman 2005)
Siphlophis compressus (from Emsley 1977)
Siphlophis compressus (from Lancini & Kornacker 1989)
Siphlophis compressus (from Pereira-Filho & al. 2017)
Siphlophis compressus (from Pérez-Santos & Moreno 1990)
Siphlophis compressus (from Pérez-Santos & Moreno 1990)
Siphlophis longicaudatus (from Hoge 1964)
Siphlophis longicaudatus (from Hoge 1964)
Siphlophis worontzowi (from Prado 1940)