398 CATALOGUE OF NORTH AMERICAN DIPTERA. 



analis Williston, Synop. N. A. Syrph., 226. — Cal., N. M. 



Hunter, Canad. Ent., xxviii, 100, notes on antennae, etc. — Nebr. 



N. J.— Smith Cat. 

 angustiventris Loew, Cent., vi, 58. — 111. 



Williston, Synop. N. A. Syrph., 231 and 234 (augusthcutris and clong- 

 ato).— N. H., N. Y., Pa. [Will.] 



Hunter, Canad. Ent., xxviii, loi, notes. — Nebr. 



Chagnon, fit. Prelim, les Syrph., 64. — St. Hilaire, Quebec. 



N. J.— Smith Cat. 

 annulifera Bigot, see ejuncida. 

 anthreas Walker, List, iii, 556. — Trenton Falls, N. Y. 



Williston, Synop. N. A. Syrph., 235. — N. H. 



N. J. — Smith Cat. ; Montreal — Chagnon. 

 arcuata Say, Jour. Acad. Sci. Phil., vi, 162; Compl. Works, 11, 357. — ]Mex. 

 barbata Loew, Cent., v, 40. — Sitka. 



Williston, Synop. N. A. Syrph., 233. — Ore., Wash., Cal. 



CoQUiLLETT, Proc. Wash. Acad. Sci., 11, 437, oc. in Alaska. 



Hunter, Canad. Ent., xxix, loi, notes. — Cal. 

 bicolor Loew, Cent., v, 39. — 111. 



Williston, Synop. N. A. Syrph., 229. — Pa. 



N. J.— Smith Cat. 

 brachygaster Williston, Biologia, Dipt., iii, 72. — Guerrero, Mex. 

 chalybea Wiedemann, Auss. Zweifl., 11, 98. — No locality. 

 . Williston, Synop. N. A. Syrph., 233. — Pa., Va., 111. 



Townsend, Trans. Amer. Ent. Soc, xxii, 53, oc. in D. C. 



N. J.— Smith Cat. 

 coloradensis Bigot, Annales, 1884, 544. — Col. 



Williston, Synop. N. A. Syrph., 236, quotes desc. 

 communis Walker, List, iii, 557. — Martin Falls, Canada, 

 curvipes Loew, Neue Beitrage, 11, 19. — Central Europe. 



Schiner, Fauna Austr., i, 355. 



Osten Sacken, Bull. Buff. Soc. Nat. Sci., iii, 70; Cat., 252. 



? Bigot, Annales, 1884, 546 (satanica). — Cal. [Will., with a query.] 



Williston, Synop. N. A. Syrph., 232. — N. H., N. Y., Minn., Cal. 



Chagnon, fit. Prelim, les Syrph., 63. — Ottawa, Canada. 



White Mts., N. H.— Slosson; Montreal— Chagnon; Axton, N. Y.— M. 

 and H. 

 ejuncida Say, Amer. Entomol., i, pi. viii; Compl. Works, i, 15. — E. Fla. and 

 Philadelphia. 



Wiedemann, Auss. Zweifl., 11, 100. 



Osten Sacken, Cat., 252, note. 



Bigot, Annales, 1884, 545 (annulifera). — N. A. [Will.] 



Williston, Synop. N. A. Syrph., 229, pi. xi, f. 8. — U. S. generally. 



Hunter, Canad. Ent., xxix, 143, oc. at Cook's Inlet, Alaska. 



Chagnon, fit. Prelim, les Syrph., 64. — St. Jean and St. Hilaire, Quebec. 



N. J.— Smith Cat.; Fla., Johnson; x\xton, N. Y.— M. and H. 



See quadrimacnlata. 

 elongata Williston, see angustiventris. 

 flavifrons Walker, List, iii, 537. — Martin Falls, Canada. 



Williston, Synop. N. A. Syrph., 234, note. 

 flavitibia Bigot, Annales, 1884, 546. — Cal. 



Williston, Proc. Amer. Phil. Soc, xx, 327 {Xylota, n. sp.) ; Synopsis 

 N. A. Syrph., 228, pi. xi, f. 6.— Col. 



