6 KANSAS UNIVERSITY gUARTERLV. 



Third joint of antennae largely red 72 



66. Last two joints of male fore tarsi laterally feathered 



scopariiis, Loe«'- 



Last one or two joints compressed t1 



ti- Lamellse of hypopygium bilobed 68 



Lamellae simple 65 



d^. Antennae black, lirst joint sometimes reddish below 



qiiadrilamellatus, Loew. 



Antennae red, third joint black duplicatus, n. sp. 



69. Hind femora of male ciliated canaliciilatus, Thomson. 



Hind femora of male not ciliated 70 



70. Costa of male enlarged 71 



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



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



ing pliimosiis, n. sp. 



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



preceding occidentalis, n, sp. 



11. Humeral callosity of the same color as the dorsum of the 



thorax 74 



Humeral callosity yellowish 73. 



73. Fore tarsi of the male plain scapularis, Loew. 



Fore tarsi enlarged fuuditor, Loew. 



74. Fore tarsi of the male plain 75 



Fore tarsi of the male not plain 77 



75. Male costa very distinctly thickened vittatus, Loew. 



Male costa not or scarcely thickened 76 



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



Face of male white germanus, Wheeler. 



77. Second joint of male fore tarsi longer than the fir st.gr a nd/s, 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 sexa)-ticulatus, Loew. 



Only the upper lobe so tipped willistonii, 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. 



Z2. Wings of male narrowed at base hmgipennis, Loew. 



Wings of male not narrowed saroies, Loew. 



