798 



UNITED STATES NATIONAL MUSEUM BULLETIN 22 4 



Figures 2323-2334. — Males. 2323, Echthtstus ru- 

 finervis Meigen. 2324, Eccoptopus longitarsis 

 Macquart. 2325, Proctacanthus philadelphicus 

 Macquart. 2326, Alcimus rubiginosus Gerstaeker. 

 2327, Labromyia albibarbis, new species. 2328, 

 Philonicus albiceps Meigen. 2329, Rhadiurgus 



2 334 



variabilis Zetterstedt. 2330, Nyssomyia ochracea, 

 new species. 2331, Machimus chrysilis Meigen. 

 2332, Stilpnogaster aemula Meigen. 2333, Neo- 

 lophonotus {Lophopeltis) albopilosus Ricardo. 2334, 

 Eccritosia amphinome Walker. 



