... Distribution.—Guatemalan highlands and probably highlands of Chiapas. Aside from the specimens examined, two others are known—one from Volc['a]n Agua, Sacatepequez (Slevin, 1939: 400), and one from Due[n]as, Sacatepequez (Boulenger, 1894: 65); these localities ... — A Taxonomic Study of the Middle American Snake, Pituophis deppei • William E. Duellman