— 28— 



will soon pubTish. Such a general catalogue of tlie Diptera of the world, 

 l)repare(l by so conscientious an authority as IJaron Osten-Sacken, could 

 not help but be of the greatest service to all students of the order, if for 

 no other reason than that of the literature. Five of the species given be- 

 low were ones omitted accidentall}' by nie in the arrangement of the MSS. , 

 or by the printer; others were overlookeil, or were in works to which 1 

 hatl no clews. I believe that the list, with these additions, is now es- 

 sentiall}- complete. Mr. V. v. Roeder informs me that Xylola larulea 

 Rondani. is the same as Stcrphus aii/enna/is I'liil., which must thus give 

 place to the earlier name. 



ADDI770NS. 



Microdon cyaneus Perty, Delectus, etc. — Brazil. 



fiilgc'HS Wiedemann, Auss. zw. Ins., ii, 82 ; Williston, Synopsis, il : 

 Macquart, Dipt. Exot., ler Suppl., 122. — N. and S. America. 

 Syrphiis alhitarsis, excavatus and alhivctttris Rondani, Dipt. Osculati. — S. America. 



octogitttatiis Jaennickc, Neue Exot. Dipt., 90. — Chili. 



similis Blanchard, in Gay's Hist. fis. y pol. de Chile, vii, 410 ; I'hilippi. 

 Yerh. Zool.-Bot. Gesellsch., xv, 745. — Chili. 

 I'lialacroinyia ardita Wicdemaim, Auss. zw. Ins., ii, 204 {Volucc'lla) ; Rondani. 



Esame, etc., 5 (id.); Mik, Wien. Ent. Ztg. 1883, 284. — S. America. 

 revDwccra mctalloritm and fiih'oluciis Walker, Dipt. Saund., 252. — Brazil. 

 Jiristalis dc'conis Perty, Delectus, etc. — Brazil. 



inversus Wiedemann, Auss. zw. Ins., ii, 161. — Surinam. 



fiiscipennis Macquart. Dipt. Exot., ler Suppl., 128, pi. xi, fig. 5. — Surinam. 



pygnuEus Macquart, Dipt. Exot., ii, 2, 54. — Surinam. 



funescens Rondani, Dipt. Osculati, 4. — Rio Negro. 

 Ih'lophilits chilcnsis (Walker?) Guerin, Iconogr., 545, pi. xcix, f. 2. — Chili. 



Also the four following from the Galapagos Islands should be in- 

 (.luded in the South American fauna. 



Syrphiis alboniaciilatus Smith, Proc. Zool. Soc, Lend., 1877, 84. 



agonis Walker, List, etc., iii, 588. 



splendfiis Thomson, Eugenics Resa, 501. 

 Baccha facialis Thomson, Eugenies Re.sa, 504. 



CORRECTIONS. 

 Mic7-odo)i conopsoidt's should be stricken out ; it is Mixogaster couopsoidcs wrongl)- 



placed. 

 Microdon anguslus Macq. Suppl. i, is not the same as .)/. angustiis Macci., .Sup])l. iii. 

 Pipiza atirantipcs Bigot is from Chili, not Brazil. 

 /'. lugtibris Jaenn. should read 96, not 4. 

 l'"or I'o/ncella polorans read plorans. 

 Syrphus clegans should have been printed in italics and indented ; it is a synonym 



of distingucndus. 

 Dolichogyna nigripcs Bigot, is 1883, not 1884. 

 SlilhosoDia iiigritur-i'is, not nigricornis. 



