Variations and Relationships in the Snakes of the Genus Pituophis

Whilst the greatest effort has been made to ensure the quality of this text, due to the historical nature of this content, in some rare cases there may be minor issues with legibility. I am greatly indebted for assistance to several individuals and institutions. In addition to the collection of specimens in the Museum of Zoology of the University of Michigan, which served as a nucleus for the work...