The Tropidophiidae is distributed from southeastern Brazil to southern Mexico and the West Indies. The genus Tropidophis is the most widespread, with three species found in South America and 15 species in the West Indies. The genus Trachyboa occurs from the Choco region of Panama south into Ecuador. Ungaliophis is found from the state of Chiapas in southern Mexico south to the Pacific coast of Colombia. Exiliboa is known only from two mountain ranges in Oaxaca, Mexico. Xenophidion is known from peninsular Malaysia and northern Borneo.
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