194 



NORTH AMERICAN DIPTERA 



on Bombyliidffi II.— 27. Lepidanthiax proboscidea; 28. Thyridanthrax selene; 29. Geron 



• i'/'v*",, , f'»"ax, antenna; 31. Sphenoidoptera varipennis; 32. Metacos 



3d. Glabellula crassicornis; 34. Stonyx clclia; 35. Ogcodocera ; 36. Mancia nana 

 n. sp. : 38. Geminana canalis; 39, Eucessia. n. sp. : 40 Paiacosnius morrisoni 

 selaphus sigrma. 



mus niancipennis ; 



37, Eucessia, 



us morrisonia; 41 Rhabdo- 



