ABT. 11. FLIES OF THE FAMILY CLUSIIDAE MELANDER AND ARCIO 51 



EXPLANATION OF PLATES. 



Plate 1. 

 (All figures ealarged eight diameters; photographed by A. L. Melander.) 



Fig. 1. Clusia lateralis Loew. . 



2. Clusia occidentalis Malloch. 



3. Clusia czernyi Johnson. 



4. Clusiodes (Clu^iaria) melanostoma Loew, form duplicata Malloch. 



5. Clusiodes (Columbiella) johnsoni Malloch, form nigripalpis Malloch 



6. Clusiodes (Clusiaria) nitida, new species. 



7. Clusiodes albimana Meigen, form obscurior Loew. 



8. Clusiodes ( Clusiaria) terminalis, new species. 



9. Clusiodes (Clusiaria) atra, new species. 



Plate 2. 



Fig. 10. Acartophthalmus nigrinus Zetterstedt. 



11. Czernyola atra Kertesz, male. 



12. Chaetoclusia longefilata, new species. 



13. Czernyola fascipennis, new species. 



14. Chaetoclusia xanthops Williston, cotype. 



15. Chaetoclusia quadrivittata, new species. 



16. Chaetoclusia bakeri Coquillett. 



17. Heteromeringia nitida Johnson, form nigripes, new variety. 



18. Heteromeringia flavipes Williston, cotype. 



19. Heteromeringia fumipennis, new species. 



20. Heteromeringia czernyi Kertesz. 



21. Sobarocephala lachnosternum., new species and puparium. 



Plate 3. 



Fig. 22. Sobarocephala Jiava, new species. 



23. Sobarocephala ruebsaameni Czerny. 



24. Sobarocephala latipennis, new species. 



25. Sobarocephala huineralis, new species. 



26. Sobarocephala setipes, new species. 



27. Sobarocephala xanthomelana, new species. 



28. Sobarocephala nigronotum, new species. 



29. Sobarocephala fascipennis, new species. 



30. Sobarocephala valida Williston, cotype. 



31. Sobarocephala convergeyis Malloch. 



Plate 4. 



Fig. 32. Sobarocephala latifrons Loew. 



33. Sobarocephala bistrigata Kertesz. 



34. Sobarocephala annulata, new species. 



35. Sobarocephala plumata, new species. 



36. Sobarocejihala bivittata, new species. 



37. Sobarocephala lumbalis Williston, cotype. 



38. Sobarocephala dorsata Czerny, 



39. Sobarocephala plumatella, new species. 



40. Sobarocephala variegata, new species. 



41. Sobarocephala hypopygialis, new species. 



42. Sobarocephala liturata, new species. , 



