360 CATALOGUE OF NORTH AMERICAN DIPTERA. 



WILLISTON, Synop. N. A. Syrph., 58, pi. in, f. 11. White Mts., N. H., Pa. 



VEKRALL, Brit. Flics, vm, 274, figs. 



Alaska Coquillett and Johnson. 



quadratus SAY, Jour. Acad. Sci. Phil., m, 90; Compl. Works, n, 79 (Scceva) 

 U.-S. 



WIEDEMANN, Auss. Zwcifl., n, 135 (Syrphiis). Pa. 



MACQUART, Dipt. Exot, Suppl. v, 95 (Syrplnis fuscanifcnnis). Baltimore. 

 [Osten Sacken, Cat., 122.] 



WILLISTON, Synop. N. A. Dipt., 57, pi. in, f. 10. U. S. generally. 



COQUILLETT, Proc. Wash. Acad. Sci.. u, 428, oc. Alaska, several places. 



CHAGXON, fit. Prelim, les Syrph., 28. St. Jean and Montreal, Quebec. 

 tenebrosus COQUILLETT, Proc. Wash. Acad. Sci., n, 428. Alaska, several places. 



MELANOSTOMA. 



SCHINER, Wien. Ent. Monatsch., iv, 213, 1860; Fauna Austr., i, 289, 1862. 



WILLISTON, Synop. N. A. Syrph., 46, def. and table of species; Biologia, 

 Dipt., in, 9, table of Central American spp., 1891. 



YEKKALL, Brit. Flies, vm, 303, 1901. 



CHAGNON, fit. Prelim, les Syrph., 25, 1901. 

 ambiguum FALLEN, Syrphici, 47 (SyrMnis). Europe. 



SCHINER, Fauna Austr., i, 291. 



: ST/EGER, Grcenl. And., 361, doubtfully ident. from Greenland. 



LUNDBECK, Dipt. Grcenl., i, 300, oc. in Greenland. 



VKKKALL, Brit. Flies, vm, 304. (175; has seen specimens from N. A. 

 angustatum WILLISTON, Synop. N. A. Syrph., 50, pi. in, f. 7. Wash. 



White Mts., N. H. Sloss.>n. 

 ? annulif erum BIGOT, Ann;iles, 1884, 84 (M.f annnlifcra). Mex. 



WILLISTON, Biologia, Dipt., in, 14, note; cannot be a Mclaiiostomu. 

 ? anthracoides BIGOT, Annales, 1884, 82. Panama. Query by Bigot. 



WILLISTON, Biologia, Dipt., in, 14, note; more likely Ocyptiiiims. 

 ? bicruciatum BIGOT, Annales, 1884, 79. Cal. Query by Bigot. 



\YILLISTON, Synop. N. A. Syrph., 53, quotes desc. 

 bucephalus WIEDEMANN, Auss. Zweifl., n, 126 (Syrplnts). Brazil. 



WILLISTON, Trans. Amer. Ent. Soc., xv, 264; Biologia, Dipt., in, n. 

 Brazil; Guerrero, Mex. 



GiGLio-Tos, Ditt. del Mess., 11, 34. Orizaba, Mex. 

 catabomba WILLISTON, Biologia, Dipt., in, 12. Guerrero, Mex. 



GiGLio-Tos, Ditt. del Mess., 11, 38. Meztillan and Orizaba, Mex. 

 coerulescens WILLISTON, Synop. N. A. Syrph., 49. Col. 



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

 concinnum SNOW, Kans. Univ. Quart., in, 229. X. M. and Col., up to 10,000 ft. 



SNOW, Kans. Univ. Quart., i, 35 (M., n. sp. ?). 

 crenulatum WILLISTON, Biologia, Dipt., in, 12, pi. i, f. 5. Guerrero, Mex. 



? GiGLio-Tos, Ditt. del Mess., n, 40, doubtfully ident. from Mex. 

 cruciatum BIGOT, see mcllinnni. 

 cyaneocinctum BIGOT, Annales, 1885, 251. Mex. 

 elegans GiGLio-Tos, Boll. R. Univ. Torino, vii, No. 132, 1892; Ditt. del Mess., n, 



39, pi. n, f. 21. Ori/aba, Mex. 

 fenestratum MACQUART, Dipt. Exot., n, 2, 103, pi. xvn, f. 6 (Syrphits). Chili. 



BLANCHARD, in Gray's Hist., etc., Chile, vn, 413 (id.). 



PHILIPPI, Aufzahlung d. Chilen' schen Dipt., 746 (id.). 



S< IIINEK, Novara, 351. S. A. 



WILLISTON, Biologia, Dipt., in, 10. Guerrero and Durango, Mex. 



