BioStor
 | Bibliographical notice (1858) Annals And Magazine of Natural History 1: 289-294 |
 | Ennis (1861) Proc. Acad. Nat. Sci. Philad 1861: 124-125 |
 | Herpetology of Japan and adjacent territory Leonhard Stejneger (1907) Bulletin United States National Museum 58: 1-577 |
 | Generic types of nearctic Reptilia and Amphibia A E Brown (1908) Proceedings of the Academy of Natural Sciences of Philadelphia 60: 112-127 |