(Pituophis catenifer vertebralis) and Central Baja California gophersnake (Pituophis catenifer bimaris) are recognized by some as single species with no subspecies Pituophis vertebralis, or as a species with two subspecies Pituophis v. vertebralis and P. v. bimaris by others. Other subspecies including the Coronado Island gophersnake (Pituophis catenifer coronalis) and San Martin Island gophersnake (Pituophis catenifer fulginatus) are of questionable validity. Gallery References Further reading Blainville, H.D. 1835. Description de quelques espèces de reptiles de la Californie précédée de l'analyse d'un système général d'herpétologie et d'amphibiologie. Nouvelles Annales du Muséum d'Histoire Naturelle 4: 233-296. (Coluber catenifer, pp. 290–291 + Plate XXVI., Figures 2, 2A, 2B.) External links catenifer Snakes of North America Reptiles of Mexico Reptiles of the United States Fauna of the Western United States Fauna of Northern Mexico Fauna of California Fauna of the California chaparral and woodlands Fauna of the San Francisco Bay Area Reptiles described in 1835 Taxa named by Henri Marie Ducrotay de Blainville