CONTENTS. 



The Hypopygium of the Tipulidse. By R. E. Snodgrass . .179 



Additions to Sphegoidea (Hymenoptera) By Henry L. Viereck 237 



The Noi-th American Cuckoo Wasps of the genus Fm-nopes 



(Hymenoptera). By Henry L. Viereck 245 



