Stejneger, 1889 : Description of two new species of snakes from California. Proceedings of the United States National Museum, vol. 12, no 766, p. 95-99 (texte intégral).
↑Stejneger, 1889 : Description of two new species of snakes from California. Proceedings of the United States National Museum, vol. 12, no 766, p. 95-99 (texte intégral).