CATALOGUE OF NORTH AMERICAN DIPTERA. 393 



groenlandicus O. Fabricius, Fauna Groenl., 208 (Tabaiius). — Greenland. 



Zetterstedt, Ins. Lapp., 595 (arcticus) ; Dipt. Scand., 11, 678 (id.). — Eu- 

 rope. 



St.i:ger, Kroyer"s Tidskr., N. R., i, 359 (arcticits), oc. in Greenland. 



LoEW, Stett. Ent. Zeit., vi, 119. 



Curtis, Ins. of Ross' Exped., lxxvii (bilineafa). [Schiodte.] 



? Walker, List, in, 607 (latro). — Martin Falls and Nova Scotia. [O. S., 

 with a doubt.] 



WiLLiSTON, Synop. N. A. Syrph., 185. — Greenland, Lapland. 



Lundbeck, Ent. Unters. i West-Grcenl., Heft vii, pi. vii, f. 17: Dipt. 

 Groenl., i, 304, bibl., etc. — Greenland. 

 hamatus Loew, Cent., iv, 79. — Huds. B. Terr. 



WiLLiSTON, Synop. N. A. Syrph., 195, transl. orig. desc. 



N. J.— Smith Cat. 

 hybridus Loew, Stett. Ent. Zeit., vii, 141. — Europe. 



Schiner, Fauna Anstr., i, 339. 



Macquart, Dipt. Exot., Suppl. 11, 60 (iiovce-scotia:). — Nova Scotia. [Ver- 

 rall, from type.] 



WiLLiSTON, Synop. N. A. Syrph., 197, quotes Macq. 



Verrall, Brit. Flies, viii, 529, full discussion. — England. 

 integer Loew, Cent., iv, 76. — N. Y. 



WiLLiSTON, Synop. N. A. Syrph., 195, transl. orig. desc. 



Hunter, Canad. Ent., xxix, 139. — N. J. 



N. J.— Smith Cat. 

 Igetus Loew, Cent., iv, 77. — N. Y., Wis. 



WiLLiSTON, Synop. N. A. Syrph., 189, pi. viii, f. 6. — Conn., N. Y. 



TowNSEND, Trans. Amer. Ent. Soc, xxii, 51 (aurcopilis). — Constantine, 

 Mich. 



Hunter, Canad. Ent., xxix, 139, syn. 

 latifrons Loew, Cent., iv, y;}. — Nebr. 



Osten Sacken, West. Dipt., 33,7, notes. — Sonoma Co., Cal. ; Red R. of 

 the North. 



WiLLiSTON, Synop. N. A. Syrph., 188. — Mass. to Cal. and Wash. 



WiLLiSTON, Biologia, Dipt., in, 68, oc. in Guerrero, Mex. 



LiNTNER, 7th N. Y. Rept., 228, 234. life hist., bibl, etc.— N. Y. ; this is 

 the H. similis of the 2d Rept. 



Hunter, Canad. Ent., xxix, 138, oc. at Cook's Inlet, Alaska. 



Chagnon, fit. Prelim, les Syrph., 59. — JNIontreal. 



N. J.— Smith Cat. 

 latitarsis Hunter, Canad. Ent., xxix, 134. — Minn. 

 lineatus Fabricius; see conostoma for the species thus identified by Osten 



Sacken. 

 lunulatus Meigen, Syst. Beschr., in, 370. — Europe. 



Schiner, Fauna Austr., i, 340. 



Coquillett, Proc. Wash. Acad. Sci., 11, 436, oc. in N. A. — Alaska. 



Verrall, Brit. Flies, viii, 540, hg. 

 mexicanus Macquart, see Ascntosyrphus. 



modestus Williston, Synop. N. A. Syrph., 192, pi. viii, f. 4. — Wj'o. 

 novae-scotiae Macquart, see hybridus. 

 obscurus Loew, Cent., iv, 74. — Col. 



Williston, Synop. N. A. Syrph., 196, transl. and notes. 

 obsoletus Loew, Cent., iv, 75. — Fort Resolution, Huds. B. Terr. 



Williston, Synop. N. A. Syrph., 196, transl. orig. desc. 



