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Kangaroo rat den before excavating, 



Cross section of den, show- 

 ing storage chambers and 

 stored grass seeds . 



Seed heads taken from one 

 kangaroo rat den - 

 A - Burrow grass seed . 

 B - Indian wheat heads . 

 C - Weed seeds . 

 D - Unidentified grass heads 



-23- 



