Idrisova L. A. RussiaKazanKazan (Volga Region) Federal University, 18 Kremlevskaya Str., Kazan 420008, Russialiya.idrisova@yandex.ru Author's articles PHOLIDOSIS VARIATIONS OF THE SAND LIZARD LACERTA AGILIS (LINNAEUS, 1758) AND COMMON LIZARD ZOOTOCA VIVIPARA (LICHTENSTEIN, 1823) FROM THE WESTERN PART OF THE TATARSTAN REPUBLIC