Variations and relationships in the snakes of the genus Pituophis
By: by Olive Griffith Stull.
Series: Smithsonian institution. United States National museum. Bulletin 175
Publisher: U.S. Govt. print. off.
Published: 1940
Place of publication: Washington
Language: eng
Number of pages: 225
Subjects: Pituophis.; Animals -- Variation.
Description: From its wide range and varied habitat, its conspicuous size and pattern, and its abundance the genus Pituophis is probably one of the best-known genera of North American snakes. The purpose of the present study is to define the taxonomy status of the included forms on a structural and geographic basis, to determine their mutual affinities as far as is possible from the available material, and to assemble the accumulated data concerning them.
Notes: Bibliography: p. 209-221.