Image from the Biodiversity Heritage Library.
Contributed by Museum of Vertebrate Zoology, University of California, Berkeley.
| www.biodiversitylibrary.org
Transcription
R. Zweifel
Apr. 10, 1952
131
Diadophis unabilis unabilis
1745 R. Zweifel
Note broken nature of upper lip stripe,
diagonal bars on labials 5 & 6.