4O2 



NORTH AMERICAN DIPTERA. 



Psectrocladius, 115 

 Pselaphila, 329 

 Pseudapinops, 365 

 Pseudiastata, 390 

 Pseudochseta, 374 

 Pseudoculex, 109 

 Pseudodexia, 357 

 Pseudodinia, 296 

 Pseudolfersia, 383 

 Pseudomorina, 357 

 Psendopyrellia, 343 

 Pseudorus, 202 

 Pseudotephritis, 277 

 Pseiidotrichia, 209 

 Pseudotractocera, 373 

 Psila, 268 

 PSILID^;, 267 

 Psilocephala, 207 

 Psilocurus, 199 

 Psilopa, 307 

 Psilopodinus, 222 

 Psilopus, 232 

 Psilotanypus, 113 

 Psilota, 253 

 Psorophora, 108 

 Psychoda, 93 



PSYCHODID^, 92 



Ptecticus, 169 

 Pterallastes, 257 

 Pterellipsis, 385 

 Pterocella, 277 

 Pterodontia, 185 

 Ptilodexia, 356 

 Ptilodegeeria, 367 

 Ptilomyia, 307 

 Ptiolina, 163 

 Ptychoptera, 91 

 Puliciphora, 238 

 Putoniella, 128 

 Pycnoglossa, 330 

 Pycnopogon, 200 

 Pyrellia, 343 

 Pyrgota, 274 

 Pyritis, 357 

 Pyrophsena, 253 



R 



Racodineura, 368 

 Rhabdopselaphus ) 217 



Rhachicerns, 162 

 Rhadiurgus, 204 

 Rhagoletis, 286 



Rhamphidia, 87 

 Rhamphinina, 357 

 Rhamphomyia, 225 

 Rhaphiocera, 169 

 Rhaphidolabis, 90 

 Rhaphioniidas, 188 

 Rhaphirhynchus, 174 

 Rhaphium, 235 

 Rhombothyria, 357 

 Rhopalomera, 281 

 RHOPAI,OMKRID/, 280 

 Rhopaloinyia, 128 

 Rhopalosyrphus, 252 

 Rhicnoessa, 296 

 Rhingia, 256 

 Rhingiopsis, 179 

 Rhinophora, 363, 379 

 Rhinotora, 281 

 Rhipiclia, 87 

 Rhymosia, 139 

 Rhynchocephalus, 186 

 Rhynchodexia, 354 

 Rhynchosciara, 139 

 RHYPHID^, 155 

 Rhyphus, 155 

 Rhypholophus, 88 

 Rhysops, 253 

 Richardia, 279 

 Rileymyia, 378 

 Rivellia, 275 

 Rcederiodes, 223 

 Ruebsaamenia, 129 

 Rimchomyia, 108 



S 



Sabethes, 108 

 Salpingogaster, 254 

 Sapromyza, 290 

 SAPROMYZID^E, 288 

 Sarcionus, 232 

 Sarcoclista, 363 

 Sarcomacronychia, 380 

 Sarcophaga, 351 

 SARCOPHAGID^, 348 

 Sarcophagula, 351 

 Sarcophilodes, 350 

 Sardiocera, 356 

 S argus, 169 

 Saropogon, 201 

 Sayoviyia, 107 

 Scteva, 255 

 Scatella, 309 



