SMITHSONIAN MISCELLANEOUS COLLECTIONS 

 VOLUME 141 (WHOLE VOLUME) 



THE BIOTIC ASSOCIATIONS OF 

 COCKROACHES 



(With 37 Plates) 



By 

 LOUIS M. ROTH 



AND 



EDWIN R. WILLIS 



Pioneering Research Division, United States Army 



Quartermaster Research and Engineering- Center 



Natick, Mass. 



(Publication 4422) 



CITY OF WASHINGTON 



PUBLISHED BY THE SMITHSONIAN INSTITUTION 



DECEMBER 2, 1960 



