Ismailova Zulfiya S. RussiaMakhachkalaDagestan State University, 43a Gadzhieva St., Makhachkala 367025, RussiaIsmailovazs@mail.ru Author's articles On the morphology of the blind snake (Xerotyphlops vermicularis (Merrem, 1820)) (Typhlopidae, Reptilia) in Dagestan