AUTHORSHIP 



This publication was prepared by the staff and collaborators 

 of the Hymenoptera Unit whose individual responsibilities were 

 as follows: Introductory section and general editorial super- 

 vision by Karl V. KromlDein * and B. D. Burks ; Symphyta and 

 Chalcidoidea by B. D. Burks ; Braconidae and Pelecinoidea by C. 

 F. W. Muesebeck; Ichneumonidae, Evanioidea, and Trigonalidae 

 by L. M. Walkley ; Cynipoidea by the late L. H. Weld ; Proctotru- 

 poidea by C. F. W. Muesebeck and L. Masner; Formicidae by M. 

 R. Smith ; and Aculeata by Karl V. Krombein. 



* Now Chairman, Department of Entomology, Smithsonian Institution. 



