E. RAYMOND HALL
CONTENTS
INTRODUCTION
PALEONTOLOGICAL HISTORY
SKELETON AND DENTITION
DISPARITY IN NUMBERS OF MALES AND FEMALES (IN ZOOLOGICAL COLLECTIONS)
MATERIALS, ACKNOWLEDGMENTS AND METHODS
VARIATION Variation with Age
DISTRIBUTION AND SPECIATION
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 MUSTELA ERMINEA Linnaeus
EXPLANATION OF CRANIAL MEASUREMENTS
TABLE OF CRANIAL MEASUREMENTS
10.6 M. V. Z. 53788 ? sad. Lopez, Penn. 36.5 12.6 10.7 8.6 12.6
LITERATURE CITED
INDEX TO VOLUME 4
79 , 145 angustidens, 78 , 165 arctica, 76 , 96 arizonensis, 75
University of Kansas Publications
Museum of Natural History
Vol. 4, pp. 1-466, plates 1-41, 31 figures in text
December 27, 1951
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