Girard, C. 1858. Atlas. Herpetology. Prepared under the superintendence of S.F. Baird. United States Exploring Expedition during the years 1838, 1839, 1840, 1841, 1842, under the command of Charles Wilkes, U.S.N. Plate 21, Figs. 1–5.
Type Status:
Syntype
Place:
Salt Lake Valley, Salt Lake, Utah, United States, North America
Kennicott, R. 1860. Explorations and surveys for a railroad route from the Mississippi River to the Pacific Ocean, vol. XII (Supplement to Volume 1, 1859), part III, No. 4. 298, plate 14.
Type Status:
Holotype
Place:
Fort Pierre, Stanley, South Dakota, United States, North America