Gordeev D. A. RussiaVolgogradVolgograd State University, 100 Universitetsky Prosp., Volgograd 400062, Russiadmitriy8484@bk.ru Author's articles CASES OF INCOMPLETE AUTOTOMY AND TAIL REGENERATION ABNORMALITY OF THE STEPPE-RUNNER (EREMIAS ARGUTA (PALLAS, 1773)) AND SAND LIZARD (LACERTA AGILIS LINNAEUS, 1758) IN THE VOLGOGRAD REGION