Great Basin Naturalist Volume 45 Number 4 Article 4 10-31-1985 Snakes of western Chihuahua Wilmer W. Tanner Brigham Young University Follow this and additional works at: https://scholarsarchive.byu.edu/gbn Recommended Citation Tanner, Wilmer W. (1985) "Snakes of western Chihuahua," Great Basin Naturalist: Vol. 45 : No. 4 , Article 4. Available at: https://scholarsarchive.byu.edu/gbn/vol45/iss4/4 This Article is brought to you for free and open access by the Western North American Naturalist Publications at BYU ScholarsArchive. It has been accepted for inclusion in Great Basin Naturalist by an authorized editor of BYU ScholarsArchive. For more information, please contact
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[email protected]. SNAKES OF WESTERN CHIHUAHUA Wilnier W. Tanner' Abstract —This is a report on the snakes of western Chihuahua that were taken at intervals from 1956 to 1972. At no time did we attempt to colleet east of Highway 45, rather expending our time in the foothills, valleys, and desert ranges east of the mountains and in the highlands of the Sierra Madre Occidental. Reference is made to reports on the geological and ecological aspects of the area as a whole, but without a major attempt to duplicate previous studies. A brief gazetteer and a map are included as guides. To provide orientation to the area traversed by the John Cross expeditions, a map of the lower Rio Urique and Rio San Miguel is also included. From the area studied, 28 genera and 51 species are listed, with three new subspecies described: two worm snakes (Leptotyphlops huinilis chihuahuaensis and Leptotyphlops diilcis sitpraocularus) and a garter snake (Thatnnophis rufipunctatus ttnilabialis).