American Weasels

by E. Raymond Hall

American Weasels

BY

E. RAYMOND HALL

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[CONTENTS]

	PAGE
Introduction	[7]
Paleontological History	[10]
Skeleton and Dentition	[12]
Disparity in Numbers of Males and Females	[19]
Materials, Acknowledgments and Methods	[21]
Variation	[24]
Variation with Age	[24]
Secondary Sexual Variation	[26]
Individual Variation	[28]
Seasonal Variation	[30]
Variation in Coloration and Molt	[30]
Variations of Taxonomic Worth	[44]
Distribution and Speciation	[54]
History of Classification	[69]
Chronological List (annotated) of Specific and Subspecific Names Applied to American Weasels	[71]
Check-List of American Species and Subspecies of the Genus Mustela	[81]
Artificial Key to American Species of the Genus Mustela	[83]
Diagnosis of the Genus	[83]
Explanation of Systematic Treatment	[84]
Systematic Accounts of Species and Subspecies	[87]
Mustela erminea	[87]
Mustela rixosa	[168]
Mustela frenata	[193]
Mustela africana	[406]
Explanation of Cranial Measurements	[417]
Table of Cranial Measurements	[418]
Literature Cited	[442]
Index	[461]

American Weasels

By E. Raymond Hall