6 KANSAS UNMVERSITV gUARTERLV. 



Third joint of antennae largely red 72 



66. Last two joints of male fore tarsi laterally feathered 



siopa/ it/s, Loew. 



Last one or two joints compressed 67 



67. Lamellae of hypopygium bilobed 68 



LamellK simple 69 



68. Antennae black, Jirst joint sometimes reddish below 



i]iiadrilamellatns, Loew. 



Antennai red, third joint black diipUcatiis, n. sp. 



69. Hind femora of male ciliated canaliculatus, Thomson. 



Hind femora of male not ciliated 70 



70. Costa of male enlarged 71 



Costa of male not perceptibly enlarged coqiiilletti, n. sp. 



71. Last joint of the male fore tarsi as long as the two preced- 



ing plumosiis, n. sp. 



Last joint of the male lore tarsi nearly as long as the three 



preceding occiiicnialis, n. sp. 



7 J. Humeral callosity of the same color as the dorsum of the 



thora.K 74 



Humeral callosity yellowish 73 



73. Fore tarsi of the male i)lain scapnlaris, Loew. 



Fore tarsi enlarged fuinUtoi\ Loew. 



74. I'ore tarsi of the male plain 75 



Fore tarsi (jf the male not ])lain 77 



75. Male costa very distinctly thickened vitlalus, Loew. 



Male costa not or scarcely thickened 76 



76. Face of male golden yellow aurifacies, n. sp. 



Face of male white gcnnanns, Wheeler. 



77. Second joint of male fore tarsi longer than the fusi.grantiis, n. sp. 

 Second joint shorter than the first 78 



78. Last joint of male fore tarsi greatly enlarged, bilobed 79 



Last joint not greatly enlarged 80 



79. Both lobes of last joint of male fore tarsi tipped with silvery 



white sexariiculatiis, Loew. 



Only the upper lobe so tipped ivillistouii, n. sp. 



80. Hind femora of male not ciliated 81 



Hind femora of male ciliated 83 



81. Third and fourth joints of male fore tarsi fringed with black 



above 82 



Third and fourth joints not so fringed; fifth joint black, a 



little compressed tcrminalis, Loew. 



82. Wings of male narrowed at base lotigipennis, Loew. 



Wings of male not narrowed sarotes, Loew. 



