368 CATALOGUE OF NORTH AMERICAN DIPTERA. 



simplex Loew, Wien. Ent. Monatsch., v, 40; Cent., vi, 43. — Cuba. 



WiLLiSTON, Syiiop. N. A. Syrph., 87. — San Domingo. 

 sodalis WiLLiSTON, Synop. N. A. Syrph., 74. — Col. 



tarsatus Zetterstedt, Ins. Lapp., 601; Dipt. Scand., 730 (both Scccva). — N. Eu- 

 rope. 

 Stager, Groenl. Antl.. 360, oc. in Greenland. 

 ScHiNER, Fauna Austr., i, 302. 

 Holmgren, Ins. Spetsb., 26 (Sccrva dryadis) ; Ins. Nordgroenl., 100 (id.). 



— Spitzbergen ; Greenland. 

 WiLLiSTON, Synop. N. A. Dipt., 294. 

 LuNDBECK, Dipt. Groenl., i, 302, syn. of Holmgren. — Greenland. Ibid., 11, 



310, the Volucclla Iappo)ia of O. Fabricius, Fauna Groenl, 208, 169, may 



be this species. 

 torvus OsTEN Sacken, Proc. Bost. Soc. Nat. Hist., xviii, 139.— White Mts., N. 



H. ; Mass., R. I., Canada, Col. 

 Zetterstedt, Ins. Lapp., 509 (Scccva tofiaritis Meig.) ; Dipt. Scand.. 11. 



723 and VIII, 3139 (id.).^N. Europe. 

 Walker, List, ni, 582 (Syrplms topiariiis Meig.), oc. in Europe, and at 



Martin Falls, Canada. 

 Schiner, Verb. Zool.-Bot. Ges., vii, 347; Fauna Austr.. i, 304 (id.). 

 WiLLisTON, Synop. N. A. Syrph., 79. — Atlantic States and Wash. 

 Verrall, Brit. Flies, viii, 356. 



Chagnon, Et. Prelim, les Syrph., 35. — Rigaud, Quebec. 

 N. J.— Smith Cat. 

 tricolor Bigot, see vchitinus. 



umbellatarum Fabricius, Ent. Syst., iv. 307; Syst. Antl., 250 (Scccz'a).— Europe. 

 Schiner, Fauna Austr., i. 307. 

 Walker, List, iii, 586 (guttatus Meig. and scxquadratus). — Martin Falls 



and Nova Scotia. [O. S. Cat., the former doubtful.] 

 Osten Sacken, Proc. Bost. Soc. Nat. Hist., xviii, 151.— White Mts., N. H. 

 WiLLisTON, Synop. N. A. Syrph., 85. — Ariz. 

 Chagnon, fit. Prelim, les Syrph., 32. — Sherbrooke. Quebec. 

 Verrall, Brit. Flies, viii. 409. 676: important. 

 Alaska — Johnson. Hunter ; N. J. — Smith Cat. 



Note. — Osten Sacken, Williston and Verrall all indicate doubt whether 

 our American form be the same as the European iimbcllatariitn. 

 velutinus Williston, Proc. Amer. Phil. Soc, xx, 314; Synop. N. A. Dipt., 7^.— 



Mt. Hood. Ore. 

 Bigot, Annales, 1884, 73 {Ischyrosyrplnis tricolor). — Cal. [Will.] 

 CoQUiLLETT, Proc. Wash. Acad. Sci., 11, 431, oc. in Alaska. 

 Verrall, Brit. Flies, viii, 321, would make Ischyrosyrphus a separate 



genus, and suspects tricolor to be a synonym of latcniarins Muller. 

 xanthostoma Williston, Synop. N. A. Syrph., 86. — Pa. 

 Province of Quebec — Fyles. 



ALLOGRAPTA. 



Osten Sacken, Bull. Buffalo Soc. Nat. Hist., iii, 49, 1876; Cat., 246, 1878. 



Williston, Synop. N. A. Syrph., 96, 1886. 



Chagnon, fit. Prelim, les Syrph., ^y, 1901. 

 exotica Wiedemann, of Van der Wulp, see fracta. 

 fracta Osten Sacken, West. Dipt., 331. — Santa Monica, Cal. 



Van der Wulp, Tijdschr. v. Ent., xxvi, 2, pi. i, f. 2 {exotica Wied.). — 

 Guadeloupe. 



