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

Hydrops caesurus (from Scrocchi & al. 2005)
Hydrops caesurus (from Scrocchi & al. 2005)
Hydrops triangularis (from Chippaux 1986)
Hydrops triangularis (from Emsley 1977)
Hydrops triangularis (from Lancini & Kornacker 1989)
Hydrops triangularis (from PĂ©rez-Santos & Moreno 1988)
Hydrops triangularis (from Cei 1993)
Hydrops triangularis (from Cei 1993)
Hydrops triangularis (from Cei 1993)