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

Amastridium sapperi (from PĂ©rez-Higareda & al. 2007)
Amastridium veliferum (from Savage 2002)
Amastridium veliferum (from Stafford & Meyer 2000)
Amastridium veliferum (from Wilson & Meyer 1969)