4 KANSAS rM\F.RSirv QL'ARTKRl.V. 



Hind tibiic somewhat infuscated at the tip ; fourth joint of 



male fore tarsi not broader than the preceding 



subciliatiis, Loew. 



32. Only the last jtjint of the male fore tarsi enlarged . /'(?//////<^/-, Loew. 



The last two joints enlarged t^2> 



The last three joints enlarged ; third and fourlh white, fifth 



black tfakotensis, n. sp. 



2,2,- Hind femora of male ciliated ciiJactyliis, Loew. 



Hind femora of male not ciliated ionsus, Loew. 



34. Last joint of male fore tarsi enlarged tt-ner, Loew. 



Fore tarsi of male plain 35 



35. ^\'ings hyaline with a grayish tinge (•aria/>i/is, Loew. 



Wings hyaline with a yellowish tinge luicipennis, Loew. 



Sub-group /'.• teguUx.' with black cilia. 



36. Fourth longitudinal vein broken 37 



Fourth longitudinal vein not broken 43 



37. Dorsum of thora.x yellow pollinose, opacjue.. . .liijracliis, Loew. 

 Dorsum of thorax geren, more or less shining 38 



T,"^. Antenn;v black 39 



AntennLt^ yellowish-red 40 



39. Fore coxa.' dark olnordatus, n. sp. 



Fore cox;u yellow ramifer, Loew. 



40. Hind tarsi and tips of of tibicV black rcffecti/s, n. sp. 



Ifinil tibiiv and basis of hintl tarsi yellow 41 



41. Tarsi of the male plain viltatits, Loew. 



Tarsi of male fringed with black at tip 42 



42. Hind femora of male ciliated ; wings normal. . . .cupmnis. Loew. 

 Hind femora not ciliated ; wings narrowed at base 



longi/>fn>iis, Loew. 



43. Arista of male antenniv enlarged at tip : middle tibine in 



both sexes with black tip hastaius, Loew. 



Arista plain 44 



44. Middle tarsi entirely black : in the male the first joint later- 



ally feathered plumipes, Scopoli. 



Middle tarsi more or less yellow at base, not feathered 45 



45. Hind tibiix; distinctly black at tip 46 



Hind tibii^ not or scarcely infuscated at tip 58 



46. Antenna black, first joint sometimes yellow below 49 



First joint entirely yellow 47 



47. Antennae yellow, lip of third joint blackened 48 



Third joint and part of second black. . . .flage/iiteneris, Wheeler. 



48. Male fore tibiie incrassated at tip henshaivi, Wheeler. 



