92 INDEX. 



Simula, 18 Trchocera, 9 



Suneches, 37 Toxorhinia,. 6 



Symplecta, 6 Trichopoda, 63 



Syritta, 48 TRINE URJE, 85 



SYRPHICI, 46 Tropidia, 53 



Syrphus, 50 Trupanea, 32 



Systropus, 44 Trypeta, 78 



Tryphera, 66 



TABANI, 18 Trypoderma, 61, 62 

 Tabanus, 19 



Tachina, 64 Ulidia, 81 



Tachydromia, 46 Urophora, 79, 80 

 TACHYDROMI^E, 46 



Tamiaptera, 81 Volucella, 56 

 Tanypus, 4 



79 ' 8 XV.OPHAO,, 18 



Theresia, 73 XYTOTOM^ 38 



Thereva, 38 XYLOTOM^G, dt 



Tipula, 7 



TIPULARI.E, 1 Zelia, 69, 70 



Toxomerus, 48 Zenillia, 66 



Toxophora, 44 Zodion, 60 



PUBLISHED BY THE 



SMITHSONIAN INSTITUTION. 



APEIL, 1858. 



