CATALOGUE OF NORTH AMERICAN DIPTERA. 353 



lucta Snow, Kans. Univ. Quart., 111, 228. — Col. 

 lugubris WiLLisTON, see zvillistoiii. 



nigripennis Williston, Proc. Amer. Phil. Soc, xx, 307 ; Syiiop. N. A. Syrpli., 

 44, pi. II, f. 14.— Mt. Hood, Ore. 



Bigot, Annales, 1884, 553 (Carfosyrplms iiifitiitafus) . — Mt. Hood, Ore. 

 [Will.] 

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

 41, pi. HI, f. I. — Cal. 



CoQUiLLETT, Proc. Wash. Acad. Sci., 11, 426, oc. in Alaska and Col. 



Chagnon, fit. Prelim, les Syrph., 22. — Sherbrooke, Quebec. 



White Mts., N. H. — Slosson; Hudsonian Zone, N. M. — Cockerell. 

 pacifica Hunter, Canad. Ent., xxix, 127, fig. — Cal. 

 pallipes LoEW, Cent., iv, 70. — D. C. 



Williston, Synop. N. A. Syrph., 41, p!. iii, f. 5. — Jackson, N. H. ; Wash., 

 Ore. 



Chagnon, fit. Prelim, les Syrph.. 2^. — Montreal. 



N. J.— Smith Cat.: White Mts., N. H.— Slosson. 

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

 II, f. 13. — Ore. 



Bigot, Annales, 1884, 555 (Mclaiwgastcr/ ochn'pcs). — Mt. Hood, Ore^ 

 [Will.] 

 petulca Williston, Synop. N. A. Syrph., 39, pi. ii, f. 15. — Wash. 



White Mts., N. H.— Slosson. 



Snow, Kans. Univ. Quart., iii, 228, oc in Col. and note. 

 plumata Loew, see cyaiicscens. 

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



CoQUiLLETT, Proc Wash. Acad. Sci., 11, 427, oc. in Alaska. 



See note about this under gracilis. 

 prima Hunter, Canad. Ent., xxviii, 92. — Pa. 

 pulchriceps Loew, Verb. Zool.-Bot. Verein, 1857, 19. — Europe. 



Schiner, Fauna Austr., i, 281. 



Becker, Rev. Gatt. Chilosia. ^7^* 



CoouiLLETT, Proc. Wash. Acad. Sci., 11, 428, oc. in Alaska. 



Verrall, British Flies, viii, 222. 

 punctulata Hunter. Canad. Ent., xxix, 128, fig. — Nebr. 

 ? rufipes Bigot, Annales, 1884, 555 (Mclaiiogastcr). — N. A. 



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

 to ma. 

 signatiseta Hunter, Canad. Ent., xxviii, 227. — Moscow, Idaho. 

 skinneri Johnson, Trans. Amer. Ent. Soc. xxix, loi. — Beulah, N. M. 

 sororcula Williston, Biologia, Dipt., in, 9. — Guerrero, IMex. 



Snow. Kans. Univ. Quart., in, 228. — N. M. 

 sororia Williston, Biologia, Dipt., iii, 8. — Durango, Mex. 

 tarda Snow, Kans. Univ. Quart., iii, 228. — Col. 

 townsendi Hunter, Canad. Ent., xxviii, 94. — Cal. 



TowNSEND, Proc Cal. Acad. Sci., ser. 2, iv, 611 {Chilosia, n. sp.). 

 tristis Loew, Cent., iv, 71. — Red R. of the North. 



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



CoQUiLLETT, Proc. Wash. Acad. Sci., 11, 427. oc. in Alaska. 



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

 versipellis Williston, Synop. N. A. Syrph., 44. — Wash. 

 willistonii Snow, Kans. Univ. Quart., in. 22/, change of name. 



Williston, Synop. N. A. Syrph., 45 (liigtihris. preoc). — Col. 

 Hunter, Canad. Ent., xxviii, 2;^^^ note. 



