AMERICAN DIPTERA. 4<»."> 



same species as type, namely aterrima. Seeing, therefore, thai Tn- 

 neura was a synonym of Phora, some years later (Syst. Beschr., vi, 

 212), Meigen distinctly says that his Trineura is a synonym of 

 Phora, which has precedence; it is on this account that he puts all 

 the species under Phora, dropping Trineura entirely. 



From these facts it can be seen that a strict application of the 

 rule of priority would necessitate the removal of Trineura. As i; 

 would cause needless confusion, however, to restore Phora to its 

 proper position at this late date, I have thought it best to follow 

 Becker's recent work and retain Trineura. 



EXPLANATION OF PLATES. 



PLATE V. 



Figure 1. Phora pachyneura Lvv. Wing. 



" 2. Phora pachyneura Lw. Hypopygium of male. 



" 3. Phora fratercula sp. nov. Wing. 



" 4. Phora thoracia Meig. Wing. 



•' 5. Phora spinipes Coq. Wing. 



" 6. Phora spinipes Coq. Hind tibia. 



7. Phora olympise sp. nov. 

 " 8. Phora scutellata sp. nov. 

 " 9. Phora multiseriata sp. nov. Wing. 



" 10. Phora multiseriafa. Hind leg. 



" 11. Phora scutellata sp. nov. Hind leg. 



" 12. Phora comstocki sp. nov. Wing. 



'• 13. Phora luggeri A\d . Wing. 



PLATE VI. 



" 11. Phora niiidifrons sp. nov. 



15. Phora cimbicis Aid. Wing. 



"' 16. Phora incisuralis Lw. Wing. 



" 17. Phora grcenlandica Lund. Wing. (After Lnndbeck.) 



" 18. Hypocera johnsonisp. nov. Wing. 



" 19. Hypocera johnsoni. Head seen from the front. 



" 20. Hypocera ehrmanni sp. nov. Wing. 



" 21. Hypocera femorata Meig. Wing. 



" 22. Hypocera clavataLw. Hind leg. 



" 23. Hypocera clavata. Wing. 



" 24. Hypocera grenadensjs sp. nov. Wing. 



" 25. Aphioclaeta epirse Brues. Wing. 



" 26. Aphiochxta pygmsea Zett. Wing. 



" 27. Aphiochxta obscusra p. nov. Wing. 



TRANS. AM. ENT. SOC. XXIX. DECEMBER. I90J 



