CONTENTS

Importance of Rodent Groups[1]
Identification[3]
Description[5]
Occurrence[7]
Habits[9]
Food and Storage[18]
Burrow Systems, or Dens[28]
Commensals and Enemies[33]
Abundance[36]
Economic Considerations[36]
Summary[38]
Bibliography[40]

WASHINGTON
GOVERNMENT PRINTING OFFICE
1922

Plate I.—Banner-tailed Kangaroo Rat (Dipodomys spectabilis spectabilis Merriam).
From Dipodomys merriami Mearns and subspecies, which occur over much of its range, this form is easily distinguished by its larger size and the conspicuous white brush on the tail.

UNITED STATES DEPARTMENT OF AGRICULTURE BULLETIN No. 1091 Also Technical Bulletin No. 1 of the Agricultural Experiment Station, University of Arizona
Washington, D. C.PROFESSIONAL PAPERSeptember, 1922