EXPLANATION OF THE PLATES. 



Remark. The wings figured on Plates I and II are all magnified about 

 4| times, except the wings fig. 2 and 11 of Plate II, which are magnified 

 9f times. 



PLATE I. 



1. Dicranomyia longipennis Schum, 



2. Dicranomyia pubipexnis 0. S. 



3. Dicranomyia hjeretica 0. S. 



4. Trocliooola aegus Say. 



5. Elepliantomyia westwoodi 0. S. 



6. Toxorrnina magna 0. S. 



7. Cylindrotoma nodicornis 0. S. 

 S. Dicranoptycha sobrina 0. S. 

 9. Orimarga alpina Zetterst. 



10. Elliptera omissa Schiner. 



11. Antocha opalizans 0. S. 



12. Teucholaois complexa 0. S. 



13. Atarba picticornis 0. S. 



14. Rhypholophus nubilus 0. S. 



15. Rhypholophus rubellcs 0. S. 



16. Erioptera chlorophylla 0. S. 



17. Erioptera venusta 0. S. 

 IS. Erioptera arm at a 0. S. 



19. Erioptera sp. nov. (The wing was taken from a California!! speci- 



men, closely allied to E. hirtipennis 0. S.) 



20. Symplecta PUNCTiPENBris M. 



PLATE II. 



1. Trimicra pilipes Fab. 



2. Goniomyia sulphurella 0. S. 



22 December, 1868. r oo>» \ 



