394 CATALOGUE OF NORTH AMERICAN DIPTERA. 



pilosus HUNTER, Canad. Ent, xxix, 137. Brit. Col. 

 polygrammus LOEW, see Asemosyrphus mexicanus. 

 porcus WALKER, List, in, 551. Martin Falls, Canada. 



OSTEN SACKEN, Cat., 250, note on type. 



WILLISTON, Synop. N. A. Syrph., 197, quotes both. 

 similis MACQUART, Dipt. Exot., n, 2, 64. Ga. 



WALKER, List, in, 605 and 614 (fasciatus and Eristalis dccisus'). Martin 

 Falls, Canada ; Trenton Falls, N. Y. 



J^IXNICKE, Neue Exot., Dipt., 94 (susiirrans). 111. 



OSTEN SACKEN, Cat., 134 and 250, note, syn. 



WILLISTON, Synop. N. A. Syrph., 189, pi. vni, f. 2. New England and 

 Canada to Cal. 



CHAGNON, fit. Prelim, les Syrph., 58. Montreal. 



N. J. Smith Cat. ; Fla. Johnson, 

 stipatus WALKER, List, in, 602. Trenton Falls, N. Y. 



OSTEN SACKEN, Cat.. .250, note; probably same as conostoma. 

 trivittatus FABRICIUS, Syst. Antl., 234 (Eristalis). Europe. 



MEIGEN, Syst. Beschr., in, 373. 



MACQUART, Hist. Nat. Dipt., i, 510. 



ZETTERSTEDT, Dipt. Scand., n, 679. 



LOEW, Stett. Ent. Zeit., vn, 142. 



SCHINER, Fauna Austr., i, 340. 



BIGOT, Annales, 1880, 141, oc. in Persia. 



GiGLio-Tos, Ditt. del Mess., 11, 18, bibl. and oc. in Mexico City. 



ASEMOSYRPHUS. 



BIGOT, Bull. Soc. Ent. France, 1882, cxxviii ; Annales, 1883, 228. 

 GiGLio-Tos, Ditt. del Mess., 11, 18, 1893. 

 bicolor BIGOT, Bull. Soc. Ent. France, 1882; Annales, 1883, 350. Mex. 



GiGLio-Tos, Boll. R. Univ. Torino, vn, No. 123, 1892 (inipitnts and oli- 



vaccus) ; Ditt. del Mess., n, 19. Mexico, several places. 



mexicanus MACQUART, Dipt. Exot., 11, 2, 64, pi. xi, f. 2 (Hclophilus) . Mex. 

 LOEW, Cent., x, 55 (Hclophilus polygrammus). Cal. [Will.] 

 OSTEN SACKEX, West. Dipt., 338 (id.), note on male. Sierra Co., Cal.; 



Ore. 

 BIGOT, Bull. Soc. Ent. France, 1882 (oculifcrns, nigroscittatus, and ftavo- 



candatns) ; Annales, 1883. 350. 351 (id.). Mex. [Will.] 

 WILLISTON, Synop. N. A. Syrph., 186, pi. vin, f. 7 (Helophilus') ; Biologia, 



Dipt., in, 68 (id.). Wash., Cal.; Mexico, several places. 

 HUNTER, Canad. Ent., xxix, 137 (id.), oc. in S. D. 

 GiGLio-Tos, Boll. R. Univ. Torino, vn, No. 123, 1892 (griseus) ; Ditt. 



del Mess., n, 20, syn., etc. Mexico, various places. 



MALLOTA. 



MEIGEN, Syst. Beschr., in, 337, 1822. 



MACQUART, Dipt. Exot., 11, 2, 67, 1842 (Imatisma). 



SCHINER, Fauna Austr., i, 342, 1862. 



WILLISTON, Synop. N. A. Syrph., 201, def. and table of species, 1886. 



VERRALL, Brit. Flies, vin, 551, 1901. 



CHAGNON, fit. Prelim, les Syrph., 55, 1901. 

 albipilis SNOW, Kans. Univ. Quart., in, 244. N. M. 

 bipartita W'ALKER, List, in, 599 (Merodon). Ga. 



