ROBBER FLIES OF THE WORLD 



793 



Figures 2272-2281.— Males. 2272, Alcimus rubi- 

 ginosus Gerstaecker. 2273, Hippomachus pegasus 

 Loew. 2274, Neoitamus cyanurus Loew. 2275, 

 Acanthopleura ravus Loew, ventral. 2276, Ech- 

 thistus rufinervis Meigen. 2277, Polyphonius 



2281 



laevigatus Loew. 2278, Leptogaster cylindrica De 

 Geer. 2279, Nyssoprosopa pollinosa, new species. 

 2280, Michotamia sp. 2281, Lonchodogonus crib- 

 ratus, new species. 



