Description of a new species of snake of the colubrid genus Gyalopion from the State of Zacatecas, Mexico
By: by Alan E. Leviton and Benjamin H. Banta.
Contributors: Banta, Benjamin H., joint author.
Series: Occasional papers of the California Academy of Sciences,; no. 26; Occasional papers of the California Academy of Sciences ;; no. 26.
Publisher: The Academy
Published: 1961
Place of publication: San Francisco
Language: eng
Subjects: Gyalopion.; Snakes -- Mexico.
Notes: Bibliography:  p. 4.
Cover title.