CATALOGUE OF NORTH AMERICAN DIPTERA. 353 



lucta Sxow, Kans. Univ. Quart., in, 228. Gil. 

 lugubris WILLISTON, see zvillistoni. 



nigripennis WILLISTON, Proc. Amer. Phil. Soc., xx, 307; Synop. X. A. Syrph., 

 44, pi. ii, f. 14. Mt. Hood, Ore. 



BIGOT, Annales, 1884, 553 (Cartusvr^lnts in/ mint/its') . Mt. Hood, Ore. 



[Will.] 



occidentalis WILLISTON, Proc. Amer. Phil. Soc., xx, 305 ; Synop. N. A. Syrph., 

 41, pi. in, f. I. Cal. 



COQUILLETT, Proc. Wash. Acad. Sci., n, 426. oc. in Alaska and Col. 



CHAGNON, fit. Prelim, les Syrph., 22. Sherbrooke, Quebec. 



White Alts.. N. H. Slosson ; Hudsonian Zone, N. M. Cockerel!. 

 pacifica HUNTER, Canad. Ent., xxix, 127, fig. Cal. 

 pallipes LOE\V, Cent., iv, 70. D. C. 



WILLISTON, Synop. N. A. Syrph., 41, pi. in, f. 5. Jackson, N. H. ; Wash., 

 Ore. 



CHAGNON, fit. Prelim, les Syrph., 23. Montreal. 



N. J. Smith Cat; White Mts, N. H. Slosson. 



parva WILLISTON, Proc. Amer. Phil. Soc., xx, 307; Synop. N. A. Syrph., 45, pi. 

 ir, f. 13. Ore. 



BIGOT, Annales, 1884, 555 (Mclanogastcr? ochripcs). Mt. Hood, Ore 



[Will.] 

 petulca WILLISTON, Synop. N. A. Syrph., 39, pi. n, f. 15. Wash. 



White Mts., N. H. Slosson. 



SNOW, Kans. Univ. Quart., in, 228, oc. in Col. and note. 

 plumata LOE\V, see cyancscciis. 

 plutonia HUNTER, Canad. Ent., xxix, 125, fig. Cook's Inlet, Alaska. 



COQUILLETT, Proc. Wash. Acad. Sci., n, 427, oc. in Alaska. 



See note about this under gracilis. 

 prima HUNTER, Canad. Ent., xxvin, 92. Pa. 

 pulchriceps LOEW, Verb. Zool.-Bot. Verein, 1857, 19. Europe. 



SCHINER, Fauna Anstr., i, 281. 



BECKER, Rev. Gatt. Chilosia, 372. 



COQUILLETT, Proc. Wash. Acad. Sci., n, 428, oc. in Alaska. 



VERRALL, British -Flies, vni, 222. 



punctulata HUNTER, Canad. Ent., xxix. 128, fig. Nebr. 

 ? rufipes BIGOT, Annales, 1884, 555 (Melanogaster}. N. A. 



WILLISTON, Synop. N..A. Syrph., 301, quotes desc. ; may be a Mclanos- 



toiua. 



signatiseta HUNTER, Canad. Ent., xxvm, 227. Moscow, Idaho, 

 skinneri JOHNSON, Trans. Amer. Ent. Soc., xxix, 101. Beulah, N. M. 

 sororcula WILLISTON, Biologia, Dipt., in, 9. Guerrero, Mex. 



SNOW, Kans. Univ. Quart., in. 228. N. M. 

 sororia WILLISTON, Biologia, Dipt., in, 8. Durango, Mex. 

 tarda SNOW, Kans. Univ. Quart., 111, 228. Col. 

 townsendi HUNTER, Canad. Ent., xxvm, 94. Cal. 



TOWNSEND, Proc. Cal. Acad. Sci., ser. 2, iv, 611 (C7//7f.s-/</, n. sp.). 

 tristis LOEW, Cent., iv, 71. Red R. of the North. 



WILLISTON, Synop. N. A. Syrph., 293, notes. 



COQUILLETT, Proc. Wash. Acad. Sci., n, 427. oc. in Alaska. 



Beulah, N. M. Skinner; Canadian Zone, X. M. Cockerell. 

 versipellis WILLISTON, Synop. N. A. Syrph., 44. Wu-h. 

 willistonii SNOW, Kans. Univ. Quart., in, 227, change of name. 



WILLISTON, Synop. N. A. Syrph., 45 (lugubris, preoc.). Col. 



HUNTER, Canad. Ent., xxvm, 233, note. 



