CONTENTS. 



Page 



Illustrations 4 



Introduction 5 



Acknowledgments 6 



'Key to the Ground Squirrels of California 8 



California Ground Squirrel 9 



Fisher Ground Squirrel 44 



Catalina Island Ground Squirrel 49 



Douglas Ground Squirrel 52 



Rock Squirrel 58 



Oregon Ground Squirrel 59 



Belding Ground Squirrel 67 



Stephens Soft-haired Ground Squirrel 73 



Mohave Ground Squirrel ; 75 



Yuma Hound-tailed Ground Squirrel 76 



Death Valley Round-tailed Ground Squirrel 80 



Palm Springs Round-tailed Ground Squirrel 81 



Sierra Golden-mantled Ground Squirrel 83 



Inyo Golden-mantled Ground Squirrel 89 



San Bernardino Golden-mantled Ground Squirrel 92 



Desert Antelope Ground Squirrel 94 



Nelson Antelope Ground Squirrel 103 



Los Banos Antelope Ground Squirrel 110 



Summary of Points of Special Importance from the Standpoint of 



Ground Squirrel Control 112 



Literature Cited 115 



Note. — Fisaires indicating page numbers refer to folios at foot of pages 



