NO. 2099. THE DIPTEROUS QENU8 SYMPHOROMYIA—ALDRWn. 117 



taining males of two species not before seen. All of this material 

 and much more borrowed in smaller lots I was allowed to take to 

 Washington and study in connection with the United States National 

 Museum types; so that I had about 400 specimens together, includ- 

 ing t^'^pes of all species but those in the University of Kansas, which 

 I examined later. Even with this exceptional opportunitj^-, I did 

 not have material enough to full}'^ settle the status of two or three 

 species, which must await further collection of specimens. The 

 names of collectors are mentioned in connection with the various 

 species; my thanks are due to them, to the gentlemen above named, 

 and to Profs. H. F. Wickham and S. J. Hunter, and to Mr. Frederick 

 Knab, and Dr. ]j. O. Howard. 



Tables of Species of Symphoromyia. 



MALES. 



1. Face, with long, erect pile on the sides 2. 



Face bare on the sides 8. 



2. Proboscis slender, with narrow labella, as long as height of head (California). 



cruenta Ooqiiillett. 

 Proboscis normal, short, the labella fleshy 3. 



3. Third antennal joint concave in profile at apex, l^elow the ariista 4, 



Third antennal joint kidney-shaped as usual, hence convex 7. 



4. Sides of abdominal segment 2-4 broadly yellow in ground color (Puget Sound; 



California) sackeni, new species. 



Sides of abdomen black ^ 5. 



5. Palpi and tMrd antennal joint yellow or reddish; pile on head very dense and long, 



reddish (California) pilosa, new species. 



Palpi and third antennal joint black 6. 



6. Pile of sides of face and of first antennal joint very deaso; fourth posterior cell 



closed or nearly so (California) barbcila, new species. 



Pile of moderate density; fourth posterior cell wide ojien or slightly naiTowed 

 (California; Washington) johnsoni Coquillett. 



7. Fourth abdominal segment expanded below on each side, with a row of stiff black 



hairs along the projecting margin (Oregon; Washington — coraata Bigot). 



pachyceras Williston. 

 Fourth abdominal segment plain (Idaho; Washington) itiqnmtor, new species. 



8. Front and middle tibiae yellow 9. 



All tibiae black, knees narrowly reddish 12. 



9. Hal teres yellow (Pennsylvania; Alabama; New Hampshire; Ohio; New Mexico; 



Colorado; Utah; Montana; Idaho; Alberta^Zar/paZ/i/s Adams). .//iV/a Johnson. 

 Halteres infuscated 10. 



10. Abdomen very shining (British Columbia; Washington; Oregon; California; 



Nevada — picticornis and latipalpis Bigot) plagens Williston. 



Abdomen opaque 11. 



11. Small, light-colored species, the first antennal joint with mostly white pile below 



(New Jersey) ciacrea Johnson. 



Medium-sized species with black pile on the first antennal joint (California; 

 Colorado— /em Coquillett) .• iiivittata Bigot. 



12. Body gray pollinose, opaque 13. 



Body black, velvety, or shining 14. 



