Image from the Biodiversity Heritage Library.
Contributed by Museum of Vertebrate Zoology, University of California, Berkeley.
| www.biodiversitylibrary.org
Transcription
Petelka
1946.
June 25 Douglas Co., Nevada.
in the area of interbreeding can be answered
only after a good series of specimens is
obtained. Details of considerable interest
and significance can probably be
obtained from comparison of intergrading
characters between first year and adult
individuals.