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

Pseudoboa coronata (from Chippaux 1986)
Pseudoboa coronata (from Duellman 2005)
Pseudoboa coronata (from Guichenot 1855)
Pseudoboa coronata (from Lancini & Kornacker 1989)
Pseudoboa coronata (from Starace 1998)
Pseudoboa coronata (from Wied-Neuwied 1822-1831)
Pseudoboa haasi (from Giraudo 2001)
Pseudoboa neuwiedii (from Dugès 1886)
Pseudoboa neuwiedii (from Emsley 1977)
Pseudoboa neuwiedii (from Starace 1998)
Pseudoboa neuwiedii (from Chippaux 1986)
Pseudoboa neuwiedii (from Stejneger 1901)
Pseudoboa neuwiedii (from Chippaux 1986)
Pseudoboa neuwiedii (from Stejneger 1901)
Pseudoboa neuwiedii (from Stejneger 1901)
Pseudoboa neuwiedii (from Stejneger 1901)
Pseudoboa nigra (from Pereira-Filho & al. 2017)
Pseudoboa nigra (from Vanzolini & al. 1980)
Pseudoboa nigra (from Vanzolini & al. 1980)
Pseudoboa nigra (from Cei 1993)
Pseudoboa nigra (from Cei 1993)