26 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.63 



Figure 7. Minettia americana, same, lateral view. 



8. Minetta obscura, hypopygium of male, ventral view, one side. 



9. Minetta lupidina, hypopygium of male, ventral view, one side. 



10. Sapromyza serrata, hypopygium of male, side view. 

 10a. Sapromyza serrata, inferior forceps. 



11. Sapromyza obttisilamellata, hypopygium of male, ventral view. 



12. Sapromyza obtusilameellata, same, rear view. 



13. Sapromyza annulata, hypopygium of male, rear view. 

 13a. Sapromyza annulata, inferior forceps. 



14. Sapromyza pictiventris, hypopygium of male, rear view. 

 14a. Sapromyza pictiventris, inferior forceps. 



15. Sapromyza quadrilineata, hypopygium of male, rear view 

 loa. Sapromyza quadrilineata, inferior forceps. 



Plate 2. 



Hypopygia of Sapromyzidae. 



FigitreIB. Camptoprosopella verticalis. genitalia of female, ventral view, onf 

 side. 

 17. Cam,ptoprosopella verticalis, hypopygium of male, side view. 

 IS. Sapromyzosoma fraterna, hypopygium of male, side view. 



19. Sapromyzosoma philadelphica, hypopygium of male, side view. 



20. Sapromyzosoma fratcina, inferior forceps of male. 



21. Sapromyzosoma fraterna, hypopygium of male, ventral view, one side. 



22. Sapromyzosoma conjuncta, hypopygium of male, side view. 



23. Sapromyzosoma nubilifera, hypopygium of male, side view. 



24. Sapromyzosoma pernotata. inferior forceps. 



2r>. Sapromyzosoma fratercula, hypopygium of male, side view. 



26. Sapromyzosoma pernotata, hypopygium of male, side view. 



27. Sapromyzosoma tennispina, superior forceps. 



28. Sapromyzosoma imitatrix, hypopygium of male, side view. 



ADDENDUINI. 



After the manuscript of this paper was sent to the press a paper 

 by Dr. A. H. Sturtevant appeared in which he records Periscelis an- 

 nulata Fallen from Alabama. South Dakota, and New Mexico.® 



In the same paper he describes a new genus and species. S-phyro- 

 peviscelis wheeleri Sturtevant, from Massachusetts. This genus dif- 

 fers from Periscelis in having the frons much wider, about three 

 times as wide as either eye. the antennal bases separated by about as 

 great a distance as either is from eye. not rather closely approxi- 

 mated, the front of frons flattened, and the outer cross-vein of wing 

 lacking. We have not seen the genus. 



«Araei-. Mus. Novit., No. 76, p. 1, May 21, 1923. 



