Editorial Staff 



E. G. CONKLIN Princeton University. 



GEORGE T. MOORE -The Missouri Botanic Garden. 



T. H. MORGAN Columbia University. 



\Y. M . WHEELER Harvard University. 



E. B. WILSON -Columbia University. 



Managing Editor 



FRANK R. LILLIE The University of Chicago. 



All communications and manuscripts should be sent to the Man- 

 aging Editor, the University of Chicago, Sept. I5th to June I5th, or 

 Woods Hole, Mass., June I5th to Sept. I5th. Subscriptions and other 

 matter should be addressed to the Biological Bulletin, Prince and 

 I.cmon Streets, Lancaster, Pa. 



