Proceeding^ of the American Academy of Arts and Sciences. 

 Vol. XLVI. No. 18. — March, 1911. 



CONTRIBUTIONS FROM THE ZOOLOGICAL LABORATORY OF 

 THE MUSEUM OF COMPARATIVE ZOOLOGY AT HARVARD 

 COLLEGE, E. L. MARK, DIRECTOR. — No. 218. 



DIVISION OF LABOR AMONG ANTS. 



By Edith N. Buckingham. 



With a Plate. 



