CATALOGUE OF NORTH AMERICAN DIPTERA. 347 



RHOPALOSYRPHUS. 



GiGLio-Tos, Boll. R. Univ. Torino, vi, No. 108, 1891 ; Ditt. del Mess., i, 



34, 1892. 



F. LYNCH ARRIBALZAGA, Dipt. Argentina, 1891, 37 (Holmbcrgia). 

 WILLISTON, Biologia, Dipt., in, 78, 1891, notes, 

 giintheri F. LYNCH ARRIBALZAGA, Dipt. Argent, 1891, 37 (Holmbergia"). Buenos 



Aires. 

 GiGLio-Tos, Boll. R. Univ. Torino, vn, No. 118; Ditt. del Mess., i, 35, pi. 



i, f. 10. Chinantla, Mex. 



MIXOGASTER. 



MACQUART, Dipt. Exot., n, 2, 14, 1842. 



KAHL, Kans. Univ. Quart., vi, 140, list of species, etc., 1897. 

 bellula WILLISTON, Biologia, Dipt., in, i, pi. i, f. i. -Guerrero, Mex. 

 breviventris KAHL, Kans. Univ. Quart., vi, 137. Kans. 

 dimidiata GiGLio-Tos, Boll. R. Univ. Torino, vi, No. 123, 1892; Ditt. del Mess., 



i, 33, pi. i, f. 9. Tuxpango, Mex. 

 mexicana MACQUART, Dipt. Exot., Suppl., I, 123, pi. x, f. 15. Mex. 



WILLISTON, Biologia, Dipt., in, i, oc. and note. Guerrero, Mex. 



CALLICERA. 



PANZER, Fauna Germanica, civ, 1806. 



MEIGEN, Syst. Beschr., in, 155, 1822. 



SCHINER, Fauna Austr., I, 248, 1862. 



SNOW, Kans. Univ. Quart., i, 33, 1892. 



VERRALL, Brit. Flies, vin, 655, 1901. 

 johnsoni HUNTER, Canad. Ent., xxvm, 87. Pa. 



montensis SNOW, Kans. Univ. Quart, i, 34, pi. vn, f. 4; in, 225, notes. Col., 

 9,000 ft. ; N. M., 9,500 ft. 



CHRYSOTOXUM. 



MEIGEN, Illig. Mag., 11, 259, 1803; Syst. Beschr., in, 166, 1822. 

 SCHINER, Fauna Austr., i, 252, 1862. 



WILLISTON, Synop. N. A. Syrph., 13, 1886, table of species, etc. 

 CHAGNON, fit Prelim, les Syrph., 73, 1901. 

 VERRALL, Brit. Flies, vin, 641, 1901. 

 derivatum WALKER, List, in, 542. Martin Falls, Canada. 



BIGOT, Annales, 1883, 323 (villosulum^.Wash. [Will.] 



WILLISTON, Synop. N. A. Syrph., 16, pi. i, f. 5. Alaska, Colorado Mts., 



Cal., Ore. 

 SNOW, Kans. Univ. Quart., i, 34, oc. and notes; in, 226, oc. and notes.- 



Col. 



TOWNSEND, Trans. Amer. Ent. Soc., xxn, 35, notes on the male. 

 HUNTER, Canad. Ent., xxvm, 89. Wyo., Nebr. 

 N. M. Coq. 

 flavifrons MACQUART, Dipt Exot., 11, 2, 17. Newfoundland. 



WILLISTON, Synop. N. A. Syrph., 17, would drop, 

 integrum WILLISTON, Synop. N. A. Syrph., 16; Biologia, Dipt., in, 5, oc. and 



note. Ariz. ; Sonora, Mex. 

 GiGLio-Tos, Ditt. del Mess., i, 39. Mex. 

 SNOW, Kans. Univ. Quart., in, 227, oc. in N. M., and note. 



