Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
A Compendium of the Ninth Census (June 1, 1870,): Compiled Pursuant to a Concurrent Resolution of Congress, and Under the Direction of the Secretary of the Interior
A second contribution to the ophidian fauna (Reptilia: Serpentes) of Kohfidisch, Austria/Zweiter Beitrag zur Schlangenfauna (Reptilia: Serpentes) von Kohfidisch (Burgenland, Österreich)