32 



EDWARD NORTON. 



American Entomological Society, and in giving most ready and valu- 

 able information from rare books, only to be found there. Through 

 the Smithsonian Institute, beside others, insects have been received 

 from the following western localities : from the Hudson's Bay Terri- 

 tory and Russian America, collected by Eobt. Kennicott ; from AVash- 

 iugton Territory and Puget's Sound, by Dr. C. B. Kennerley; N. W. 

 Boundary Survey, Lieut. G. Beckwith, U. S. A.; Pacific R. R. Sur- 

 vey, near 38*^ N. L.; St. Louis, Mo., Dr. Engelmann ; Mexico, Dr. H. 

 DeSaussure; also others mentioned in the course of the manuscript. 



A list of the described species of South America is added, which 

 may be useful at some future time. 



SYNOPSIS OF THE ORDER. 



Order HYMENOPTERA, Liuu. 

 Section I. Terebrantia, Latr. 

 Sub-Section 1. Plujtipliaga. 



Division 1. Serrifera. 



2. Terebellifera. 



2. Entomopha(ja. 



1. Spiculifera. 



2. Tubulifera. 

 Section II. Aculeata, Latr. 

 Sub-Section 1. Prxdones. 



1. Heterogyna. 



2. Fossores. 



3. Diploptera. 



1. Tenthredinidae. 



2. Uroceridae. 



3. Cynipidae. 



4. Evaniadae. 



5. Ichneumonidae. 



6. Chalcididee. 



7. Proctotrupidae. 



8. Chrysididae. 



9. Formicidae. 



10. Mutillidas. 



11. Scoliadae. 



12. Pompilidae. 



13. Sphegidae. 



14. Larridae. 



15. Bembicidae. 

 10. Nyssonidae. 

 17. Crabionidae. 

 IS. Vespidae. 



1. Solitary 1. Masarim. 



2, EUMENINI. 



2. Social. 3. Vesi-ini. 



2. Mellifcra, Latr. — Antliophila. 



19. Andrenidae. 



20. Apidae. 



