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

Philodryas aestiva (from Abalos & Baez 1963)
Philodryas aestiva (from Amaral 1976)
Philodryas aestiva (from Miranda & al. 1983)
Philodryas aestiva (from Orejas-Miranda 1959)
Philodryas baroni (from Abalos & Baez 1963)
Philodryas baroni (from Cabrera 2004)
Philodryas baroni (from Cei 1993)
Philodryas baroni (from Freiberg 1982)
Philodryas baroni (from Lavilla & al. 1993)
Philodryas baroni (from Norman 1994)
Philodryas baroni (from Schocchi & al. 2006)
Philodryas baroni (from werner 1903)
Philodryas boliviana (from Boulenger 1896)
Philodryas boliviana (from Boulenger 1896)
Philodryas chamissonis (from Donoso-Barros 1966)
Philodryas livida (from Amaral 1926)
Philodryas livida (from Amaral 1976)
Philodryas mattogrossensis (from Amaral 1976)
Philodryas mattogrossensis (from Schenkel 1901)
Philodryas nattereri (from Amaral 1976)
Philodryas nattereri (from Pereira-Filho & al. 2017)
Philodryas nattereri (from Steindachner 1870)
Philodryas nattereri (from Wied-Neuwied 1830)
Philodryas nattereri (from Steindachner 1870A)
Philodryas nattereri (from Steindachner 1870)
Philodryas olfersii (from Carreira & al. 2005)
Philodryas olfersii (from Marques & Medeiros 2018)
Philodryas olfersii (from Orejas-Miranda 1959)
Philodryas olfersii (from Vanzolini & al. 1980)
Philodryas olfersii (from Wied-Neuwied 1822-1831)
Philodryas olfersii (from Cei 1993)
Philodryas olfersii (from Pereira-Filho & al. 2017)
Philodryas olfersii (from Cei 1993)
Philodryas olfersii (from Pereira-Filho & al. 2017)
Philodryas psammophidea (from Abalos & Baez 1963)
Philodryas psammophidea (from Cei 1986)
Philodryas psammophidea (from Werner 1909)
Philodryas psammophidea (from Günther 1872)
Philodryas trilineata (from Cei 1993)