Rosanov Yuriy M. RussiaSaint PetersburgInstitute of Cytology, Russian Academy of Sciences, 4 Tikhoretsky Prosp., Saint Petersburg 194064, Russiaroza-yur@yandex.ru Author's articles DISTRIBUTION AND CONTACT ZONE OF TWO FORMS OF THE GREEN TOAD FROM THE BUFOTES VIRIDIS COMPLEX (ANURA, AMPHIBIA), DIFFERING IN GENOME SIZE, IN THE VOLGA REGION