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

Psomophis genimaculatus (from Amaral 1976)
Psomophis joberti (from Pereira-Filho & al. 2017)
Psomophis obtusus (from Carreira & al. 2005)
Psomophis obtusus (from Giraudo 2001)