Klenina Anastasia A. RussiaТольяттиInstitute of Ecology of the Volga River Basin of RAS, Samara Federal Research Center of the Russian Academy of Sciences, 10 Komzina St., Togliatti 445003, Russiacolubrida@yandex.ru Author's articles Differences in Features of External Morphology Traits of Young and Adult Snakes of the Family Colubridae (Reptilia) Morphological characteristics of the populations of Coronella austriaca Laurenti, 1768 (Colubridae, Reptilia) on the northern border of its habitat in Russia Morphological characteristics of Coronella austriaca Laurenti, 1768 (Colubridae, Reptilia) in the Samara region Caucasian toad, Bufo verrucosissimus (Pallas, 1814), (Anura: Bufonidae) in the Caspian Sea basin (Russian Caucasus) Morphological characteristics of Elaphe dione (Pallas, 1773) (Reptilia: Colubridae) on the North of the range in the Samara region