BOSTON AND NEW YORK
HOUGHTON, MIFFLIN AND COMPANY
The Riverside Press, Cambridge
1905
COPYRIGHT 1905 BY GEORGE W. PECKHAM AND ELIZABETH G. PECKHAM
ALL RIGHTS RESERVED
Published April, 1905
NOTE
A PART of the matter presented in this volume was published several years ago by the Wisconsin Biological Survey, under the title “Instincts and Habits of the Solitary Wasps.” These chapters have been revised and modified, and new matter based upon later work has been added, in the hope that in their present less technical form the observations recorded will be of interest to the general reader.