392 



NORTH AMERICAN DIPTERA. 



Archilestris, 198 



Arebvtas, 577 

 Arctobiella, 296 

 Arctophila, 257 

 Argyra, 234 

 Arnoldia, 128 

 Arribalzagia, 188 

 Arthroceras, 162 

 Artbrocnodax, 128 

 Arthropeas, 162 

 Asemosyrphns, 258 

 Asilus, 203 

 Asiud^e, 192 

 Asindnlum, 137 

 Asphondylia, 126 

 Aspistes, 144 

 Asteia, 302, 312 

 Astrophanes, 214 

 Asynapta, 129 

 Asyndetus, 233 

 Atacta, 372 

 Atarba, 88 

 Ateloglossa, 355 

 Atberix, 163 

 Atbyroglossa, 307 

 Atomosia, 202 

 Atonia, 202 

 Atractia, 203 

 Atrichopogon, 116 

 Atropharista, 380 

 Atrophopalpus, 363 

 Atylotus, 181 

 Aulacigaster, 295 

 Automola, 276 

 Azelia, 336 



Baccba, 254 

 Baldratia, 127 

 Balioptera, 298 

 Barypblegma, 287 

 Batbydexia, 354 

 Baumbaueria, 372 

 Belvosia, 372 

 Beris, 168 

 Berisniyia, 168 

 Beskia, 371 

 Besseria, 377 

 Bezzia, 116 

 Bibio, 143 

 Bibiocephala, 151 

 Bibiodes, 143 



Bibionid.k, 140 

 Bicellaria, 225 

 Bionivia, 373 

 Bischofia, 323 

 Bittacomorpba, 91 

 Blastocera, 172 

 Blepharepium, 201 

 Ble])baripeza, 374 

 Blepharocera, 151 



BLEPHAROCKRID/E, 148 

 Blepbaroneura, 287 

 Blepbaroprocta, 224 

 Bogeria, 347 

 Bolbomyia, 163 

 Boletina; 138 

 Bolitophila, 136 

 Boloniyia, 373 

 BOMBYUin^E, 2IO 

 Bombyliomvia, 377 

 Bombylius, 215 

 BorboriD/E, 315 

 Borborus, 316 

 Boreodromia, 223 

 Bracbycampta, 139 

 Bracbycoma, 375 

 Bracbydeutera, 309 

 Bracbyneura, 130 

 Bracbyopa, 256 

 Bracbyopbyra, 334 

 Brachypalpus, 259 

 Bracbypremna, 91 

 Bracbystoma, 224 

 Brachypteromyia, 383 

 Bremia, 128 

 Bricinnia, 275 

 Briciniella, 275 

 Bryocrypta, 129 

 Bryomyia, 130 

 Bucentes, 371 



Cacodaemon, 199 

 Cacomyia, 109 



Cacosis, 171 

 Cacoxenus, 296 

 Caenia, 309 

 Callicera, 252 

 Callimyia, 243 

 Callinicus, 201 

 Calliphora, 343 

 Callopistria, 277 

 Calobata, 266 



