Charina is a genus of nonvenomous boas, commonly known as rubber boas, found in North America. Two species are currently recognized. Distribution and habitat Found in North America from western Canada south through the western United States into northwestern Mexico. Species ) Not including the nominate subspecies. T) Type species. Taxonomy Sources vary on how many species the genus contains. Some consider the rubber boa, C. bottae, to be the sole member of the genus. In addition, some experts consider the southern rubber boa, C. umbratica, to be a subspecies of C. bottae. Although the Calabar python, Calabaria reinhardtii, has been included in Charina, recent phylogenetic analyses based on DNA have shown that it does not belong to this genus. References Further reading Gray JE (1849). Catalogue of the Specimens of Snakes in the Collection of the British Museum. London: Trustees of the British Museum. (Edward Newman, printer). xv + 125 pp. (Charina, p. 113). Kluge AG (1993). "Calabaria and the phylogeny of erycine snakes". Zoological Journal of the Linnean Society 107: 293–351. PDF at University of Michigan Library. Accessed 20 July 2008. External links Charina at Life is Short, but Snakes are Long Snakes of North America Snake genera Taxa named by John Edward Gray