PROCEKDINGS 



WASHINGTON ACADEMY OF SCIENCES 



Vol. IV., pp. 117-374. [Plates ix-xi.] 



May 29, 1902. 



PAPERS FROM THE HARRIMAN ALASKA 

 EXPEDITION. 



XXVIII. 

 HYMENOPTERA. 



By William Harris Ashmead. 

 Assistant Curator, U. S. National Museum. 



CONTENTS : 



. . 117 

 Introduction 



12'? 



Systematic account 



Heterophaga : 



I. Apoidea "^ 



J -J I 

 II. Sphecotdea -^ 



I '^4 



III. Vespoidea ■^'^ 



IV. Formicoidea •'^ 



V. Proctotrypoidea = ^ 



VI. Cynipoidea "^ 



VII. Chalcidoidea ^^3 



VIII. Ichneumonoidea 4 



Phytophaga: 



IX. Siricoidea ^^^ 



X. Tenthredinoidea ^^"^ 



INTRODUCTION. 



Alaska has long been a Urra incognita to the Hymenopterol- 

 ogist Up to the year 1899, the date of the Harriman Expedi- 

 tion, less than 30 species of Hymenoptera were known from 

 this vast territory. 



Proc. Wash. Acad. Sci., May, 1902. (^'7) 



