18G4.] 



217 



DIPTERA.. — Species believed to be of the same descent but distinguishable, 

 ill addition to the above, b_y verj' insignificant plastic discrepancies. 



Bombylius fraterculus Wied. and B. major Linn. (Eur.) — Chrysotoxura sp. 

 indescr. and C. fasciolatum DeG. — Helophilus sp. indescr. and H. frutetorum 

 Fabr. — Lucilia sp. indescr. and L. csesarion Meig. — Cyrtoneura so. indescr. and 

 C. assirailis Fall — Gymnosoma par Walk, and G. rotundata Linn. — Cordylura 

 sp. indescr. and C. pudioa Meig. — AUophyla Inevis Lw. and A. nigricornis 

 Meig. — Trypeta fratria Lw. and T. heraclei Linn. — Ortalis rufipes Lw. and 0. 

 marmorea Fabr. — Drosophila sp. indescr. and D. fuuebris — Epliydra atrovirens 

 Lw. and E. micans Hal. and many other species. — In all 12 species. 



DIPTERA. — Identical species, on various authorities.* 

 Tipulariae. Culex caspius Pallas (South Russ. and Bor. Am.) Curtis. — Ceci- 

 domyia tritici (Eur. and U. S.) Harris, itc. — Limnophila faseiata Schummel 

 (Eur. and N. A.) OstenSacken. — Limnobia rivosa Lin. (Eur. and Greenl.) O.Fabr. 

 — Trichocera regelationis Lin. (Eur. and Greenl.) 0. Fabr. — Simulium rejitans 

 Lin. (Eur. and Greenl.) O.Fabr. — Tabanidse. Chrysops sepulchralis Zett. (Eur. 

 and H. B. T.) Walker. — Asilidae. Dasypogon teutonus Lin. (Eur. and Flor.) 

 Macqtiart. — Laphria flavescens Macq. (Eur. and Carolina.) Macquart. — Bomby- 

 liarii. Anthrax nycthomera Hoffm. (Eur. and Georg.) Macquart. — Bombylius 

 major Lin. (Eur. and N. A.) Walker. -\ — Empidae. Empis borealis Lin. (Eur. 

 and Greenl.) 0. Fabr. — Hemerodromia precatoria Meig. (Eur. and H. B. T.) 

 Walker. — Drapetis nigra Meig. (Eur. and H. B. T.) Walker. — Syrphici. Chryso- 

 toxum fasciolatum DeG. (Eur. and H. B. T.) Walker.X — Syrphus gracilis Meig. 

 (Eur. and N. Y.) Walker.— ii. granditarsus Forst. (Eur. and H. B.T.) Walker.— 

 S. guttatus Meig. (Eur. and H. B. T.) Walker. — S. hieroglyphicus Meig. (Eur. 

 and Nov. Sc.) Walker.—^, maculosus Meig. (Eur. and H. B. T.) Walker.— 'S,. 

 menthastri Lin. (Eur. and N. A.) Walker. — S. ribesii Fabr. (Eur. and Bor. Am.) 

 Walker. — S. scalaris Fabr. (Eur. and U. S.) Walker. — S. seriptus Lin. (Eur. and 

 Nov. Sc.) Walker.— '&. topiarius Meig. (Eur. and N. A.) Walker and Stceger. — S. 

 umbellatarum Fabr. (Eur. and N. Sc.) Walker. — -Sericomyia lappona Lin. (Eur. 

 and Greenl.) 0. Fabr. — Helophilus gr<Bnlandicus 0. Fabr. (Lapl. and Greenl.) 

 0. Fabr. and Stceger. — Volueella obesa Fabr. (S. A., N. A., Asia, Africa.) Mac- 

 quart. &c. — V. plumata Fabr. (Eur. and Newfoundland.) Macquart. — (Estracidae. 

 (Estrus taraudi Lin. (Eur. and Bor. Am.) ^eawy. — Gastrus hseinorrhoidalis Lin. 

 (Eur. and New Eng.) Sarris. — G. nasalis Lin. (Eur. and N. Y.) Fitch. — G. peco- 

 rum Fabr. (Eur. and Jamaica.) Walker. — Muscidae. Gymnosoma rotundata 

 Lin. (Eur. and Mass.) Harris. ^^ — Tachina distincta R. D. (Eur. and Philad.) 

 Boh. Desv. — Gonia auriceps Meig. (Eur., Georg. and Afr.) Walker. — Sarcophaga 

 earnaria Lin. (Eur. and Mass.) Harris. — S. mortuarum Lin. (Eur. and Greenl.) 



* A great many species included in Loew's first list had been previously re- 

 cognized as identical by other authors, and are omitted here. ** 

 t Probably B. fraterculus Wied. in Loew's third list. 

 I Probably the sp. indescr. in Loew's third list. 

 ^ Probably G. jjar Walk, in Loew's third list. 



