Pliocercus euryzonus COPE 1862
| Further studies on the serpents of Costa Rica E H Taylor (1954) University of Kansas Science Bulletin 36: 673-801 | |
| Catalogue of the Neotropical Squamata. Part I. Snakes James A Peters and Braulio Orejas-Miranda (1970) Bulletin United States National Museum 297: 1-347 |