CATALOGUE OF NORTH AMERICAN DIPTERA. 351 



GLAUROTRICHA. 



THOMSON, Eugen. Resa, 493, 1868. 

 BIGOT, Annales, 1883, 250. 



WILLISTON, Synop. N. A. Syrph., 301, note, 1886. 

 volucelloides BIGOT, Annales, 1884, 548. Mex. 



WILLISTON, Synop. N. A. Syrph., 301, note. 



PARAGUS. 



LATREILLE, Diet. D'Hist. Nat., xxiv, 1804; Hist. Nat. Crust, et Ins., xiv, 

 358, 1804. 



MEIGEN, Syst. Beschr., in, 176, 1822. 



SCHINER, Fauna Austr., i, 256, 1862. 



WILLISTON, Synop. N. A. Syrph., 17, 1886, def. and table of species. 

 .. VERRALL, Brit. Flies, vm, 149, 1901. 



CHAGNON, fit. Prelim, les Syrph., 21, 1901. 

 angustifrons LOEW, Cent., iv, 64. Va. 



WILLISTON, Synop. N. A. Syrph., 17, transl. desc. 



N. J. Smith Cat; Montreal Chagnon ; Sea Cliff, N. Y. Banks. 

 bicolor FABRICIUS, Ent. Syst., iv, 297 (Syrphits) ; Syst. Antl, 186 (Mulio). 

 Europe. 



LATREILLE, Diet. d'Hist. Nat, xxiv, 194. 



MEIGEN, Syst. Beschr., in, 178-180 (arcuatus, bicolor, tceniatus, and tcsta- 

 ceus) . 



MACQUART, Hist. Nat. Dipt., i, 565. 



ZETTERSTEDT, Dipt. Scand., n, 849-852 (bicolor, punctulalus, and rufi- 

 cauda). 



SCHINER, Fauna Austr., i, 259; Verh. Zool.-Bot. Ges., vn, 301. 



OSTEN SACKEN, Catalogue, 120, oc. in N. A. 



WILLISTON, Synop. N. A. Syrph., 18, pi. i, f. 7, 9. U. S. and Europe; 

 common and variable. 



TOWNSEND, Psyche, Nov., 1897, oc. in N. M., and notes on varieties. 



VERRALL, Brit Flies, vm, 152. 



CHAGNON, fit. Prelim, les Syrph., 21. Quebec, 

 dimidiatus LOEW, Cent., iv, 63. D. C. 



WILLISTON, Synop. N. A. Syrph., 20, transl. desc. ; Biologia, Dipt., in, 5, 

 oc. and notes ; perhaps not distinct from tibialis. Mexico, several 

 places. 

 tibialis FALLEN, Syrphidi, 60 (Pipisa}. Europe. 



MEIGEN, Syst. Beschr., in, 182-184 (hccmorrhous, aneus, obscurns, tibi- 

 alis, and femoratus). 



ZETTERSTEDT, Dipt. Scand., n, 852-854 (tibialis, trianguliferus, and aneus). 



SCHINER, Fauna Austr., i, 257, desc. and European bibliography. 



BIGOT, Annales, 1884, 540 (auricaudatus) . Cal. 



WILLISTON, Synop. N. A. Syrph., 19, bibl., etc. Europe and N. A. ; com- 

 mon and variable. 



TOWNSEND, Psyche, Nov. 1897, 140; Dec. 1897, 147, notes on varieties, 

 etc. N. M. 



VERRALL, Brit. Flies, vm, 150. 



CHILOSIA. 



MEIGEN, Syst. Beschr., in, 296, 1822. 

 SCHINER, Fauna Austr., i, 273, 1862. 



WILLISTON, Synop. N. A. Syrph., 38, 1886, table of species; Biologia, in, 

 8, 1891, table of Central Am. spp. 



