(Serpentes: Colubridae) - compiled by Van Wallach
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Head drawings: genus
Xenopholis(Serpentes: Colubridae) - compiled by Van Wallach
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 | Xenopholis scalaris (from Duellman 2005) |
 | Xenopholis undulatus (from Amaral 1976) |
 | Xenopholis undulatus (from Hoge & Federsoni 1975) |
 | Xenopholis undulatus (from Pereira-Filho & al. 2017) |
 | Xenopholis undulatus (from Schenkel 1901) |
 | Xenopholis undulatus (from Schenkel 1901) |
 | Xenopholis undulatus (from Amaral 1926) |