INDEX. 



4A5 



U 



Ula. 90 

 Ulidia, 278 

 Ulomorpha, 89 

 Uramyia, 356 

 Uranotaenia, 107 

 Ureliia, 287 



V 



Vanderwulpia, 369, 374 

 Verrallia, 245 

 Volucella, 256 



W 



Wastnaniella, 130 

 Willistoniella, 281 

 Willistonina, 389 

 Winnertzia, 126 

 Wintheinia, 375 

 Wyeomyia, 108 



X 



Xanionotum, 239 



Xanthracrona,277 

 Xanthandrus, 254 

 Xanthina, 234 

 Xanthochlorus, 234 

 Xanthodexia, 357 

 Xanthogramma, 255 

 Xanthomelana, 369 

 Xanthomelanodes, 379 

 Xenochseta, 287 

 Xiphura, 91 

 Xylodiplosis, 129 

 Xylorayia, 162 

 Xylophagus, 162 

 Xylota, 258 



Zabrachia, 172 

 Zagonia, 298 

 Zacompsia, 278 

 Zodion, 263 

 Zygomyia, 138 

 Zygoneura, 139 



