24 BULLETIN 116, UNITED STATES NATIONAL MUSEUM. 



17. Wings with a large blackiah spot at apex (Maine; Massachusetts; New Hampshire; 



New York; Pennsylvania) No. 170, harbecki, new series. 



Wings with such a spot 18, 



18. First auteunal joint yellow with the upper edge black 19. 



First antennal joint yellow on lower edge, at least nearly half black 20. 



19. Hind tibiae with a blackish spot at tip o"n inner side, on which the hairs are longer 



and denser than on other portions (North Carolina). 



No. 175, carolinensis, new species 

 Hind tibiae wholly yellow, scarcely darker on inner side (Labrador). 



No. 169, latronis, new species. 



20. Face silvery white 21. 



Face golden yellow, at least decidedly yellowish in color 22. 



21. Anal angle of wing nearly obsolete (Ontario). ..No. 168, parvicornis, new species. 

 Anal angle of wing rather prominent (Labrador). . .No. 169, latronis, new species. 



22. Anal angle of wing extending conspicuously toward the root of the wing; fore 



tarsi scarcely infuscated even at tip (Virginia). 



No. 172, virginiensis, new species. 

 Anal angle of -wing extending but little toward the root of the wing; all tarsi 

 sharply black from the tip of the first joint (New Hampshire). 



No. 171, slossonae, new species. 



23. Last four joints of middle tarsi compressed (Western States). 



No. 182, aldrichii Wheeler. 

 Middle tarsi plain as usual 24. 



24. Fii-st antennal joint normal (Oregon; California). .No. 164, cavatus, new species. 

 First antennal joint long and with long bushy hair 25. 



25. First two antennal joints broadly yellow below; lower 4-6 orbital cilia orange- 



yellow, the rest black (Western States) No. 160, consanguineus Wheeler. 



Antennae \vith the second joint wholly black or nearly so; lower half of the orbital 

 cilia pale yellow (Western States) No. 162, aurifex, new species. 



26. Fore tarsi ornamented 27 . 



Pore tarsi plain 52. 



27. Fore tarsi with the fifth joint only slightly enlarged; hind femora ciliated be- 



low 28. 



OrnaiAentation of fore tarsi conspicuous 29. 



28. Fifth joint of fore tarsi wholly black, preceding joints yellow (Eastern States). 



No. 205, terminalis Loew. 

 Fore tarsi infuscated from the tip of the first joint with the fifth joint pale yellow- 

 ish except at base (New York; New Jersey).. No. 180, domesticus, new species. 



29. Hind femora ciliated below 30. 



Hind femora without cilia 38. 



30. Hind coxae infuscated on basal half, at least with a large blackish spot on outer 



surface 31 . 



Hind coxae wholly yellow or nearly so 33. 



31. First three joints of fore tarsi of nearly equal length, the third being a little the 



longest (Western States) No. 206, canaliculatus Thomson. 



Second joint of fore tarsi longer than the fii'st, tliird very much shorter 32. 



32. Hypopygial lamellae truncate at apex, with a short, but rather acute point at 



upper corner (California; Oregon) No. 210, grandis Aldrich. 



Lamellae not truncate, but with a long acute point in the center of their apical 

 end (California) No. 211, supcrbus, new species. 



33. Humeri yellow, at least below; fifth joint of fore tarsi white 34. 



Humeri metallic 36. 



4 



