Xenodon guentheri Boulenger 1894 (SQUAMATA, DIPSADIDAE): NEW STATE RECORD AND KEY TO THE GENUS Xenodon IN THE STATE OF RIO GRANDE DO SUL, SOUTHERN BRAZIL. (2017). Boletín De La Sociedad Zoológica Del Uruguay, 25(1), 72-82. https://journal.szu.org.uy/index.php/Bol_SZU/article/view/22