American Weasels (University of Kansas Publications Museum of Natural History, Volume 4, December 27, 1951)

466 pp. Volume 4, December 27, 1951. Includes plates, and 31 figures in text. CONTENTS: Introduction; Paleontological History; Skeleton and Dentition; Disparity in Number of Males and Females; Materials, Acknowledgments and Methods; Variation: Variation with Age, Secondary Sexual Variation, Individual Variation, Seasonal Variation, Variation in Coloration and Molt, Variation of Taxonomic Worth; Distribution and Speculation; History of Classification; Check List of American Species and Subspecies of the Genus Mustela; Artificial Key to American Species of the Genus Mustela; Diagnosis of the Genus; Explanation of Systematic Treatment; Systematic Accounts of Species and Subspecies; Explanation of Cranial Measurements; Table of Cranial Measurements; Literature Cited; Index.