(Serpentes: Viperidae) - compiled by Van Wallach
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Head drawings: genus
Metlapilcoatlus(Serpentes: Viperidae) - compiled by Van Wallach
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 | Metlapilcoatlus mexicanus (from Campbell & Lamar 2004) |
 | Metlapilcoatlus mexicanus (from Dumeril, Bibron & Dumeril 1854) |
 | Metlapilcoatlus mexicanus (from Fischer 1880) |
 | Metlapilcoatlus mexicanus (from Fischer 1880) |
 | Metlapilcoatlus mexicanus (from Fischer 1880) |
 | Metlapilcoatlus nummifer (from Campbell & Lamar 2004) |
 | Metlapilcoatlus nummifer (from Günther 1863) |
 | Metlapilcoatlus nummifer (from Köhler 1999) |
 | Metlapilcoatlus nummifer (from Lee 1996) |
 | Metlapilcoatlus nummifer (from Savage 2002) |
 | Metlapilcoatlus occiduus (from Campbell & Lamar 2004) |
 | Metlapilcoatlus occiduus (from Campbell & Lamar 1989) |
 | Metlapilcoatlus occiduus (from Campbell & Lamar 1989) |
 | Metlapilcoatlus olmec (from Campbell & Lamar 2004) |
 | Metlapilcoatlus olmec (from Pérez-Higareda & al. 2007) |