312 S. W. WILLISTON. 



dispar Fabricius, Ent. Syst. iv, 309, 115; Antl. 253, 20 {Scieva) ; Wiedemann, Auss. 



Zweifl. Ins. ii, 141, 45.— S. America, 

 fascifrons Macquart, Dipt. Exot. ler Suppl. 137, 34, pi. xi, fig. 11.— New Granada, 

 fuscanipennis Maccinart, Dipt. Exot. ler Suppl. 136, 31. — Brazil, 

 floralis Fabricius, Ent. Syst. Suppl. 563, 115; Syst. Antl. 253, 21 (Sceeva) ; Wiede- 

 mann, Auss. Zweifl. Ins. ii, 145, 51.— Cayenne, 

 hortensis Philippi, Verb. Zool. Bot. Gesellsch. xv, 746.— Chili, 

 limbatus Wiedemann, Auss. Zweifl. Ins. ii, 133, 30; Fabricius, Syst. Antl. 251, 



10 iScsevu). [S2)hserophoria f] 

 melanogaster Thomson, Eugenies Resa, 495. — Eio Janeiro, 

 minutus Wiedemann, Auss. Zweifl. Ins. ii, 140, 53.— Brazil, 

 musicus Fabricius, Syst. Antl. 253, 24 {Scseva) ; Wiedemann, Auss. Zweifl. Ins. 



ii, 143, 49 ; Macquart, Dipt. Exot. ii, 2, 98, 18, pi. xvi, fig. 9.— Brazil, 

 pictus Macquart, Dipt. Exot. ii, 2, 99, 21, pi. xvi, fig. 11.— Guiana, 

 plurimaculatus Rondani. Arch, por la Zool. iii, 12. 

 porticola Thomson, Eugenies Eesa, 495. — Callao, Puna. 



quadrigeminus Thomson, Eugenies Eesa, 500. — Buenos Aires. [SjjIiceroplioHa ?] 

 sexguttatus v. d. Wulp, Tijdschr. v. Ent. xxv, 135. —Argentina, 

 sexmaculatus ]Macqiuvrt, Dii)t. Exot. 4e Suppl. 153, 49; Blanchard, in Gay's Hist. 



Fis. y Pol. de Chile, vii, 411.— Chili, 

 tibicen Wiedemann, Auss. Zweifl. Ins. ii, 127, 19 ; Macquart, Dipt. Exot. ii, 2, 



102, 26, pi. xvii, fig. 3; Walker, Trans. Linn. Soc. xvii, 346, 40. — Montevideo, 

 vertebratus ["Phil."?] Rondani, Ai-ch. por la Zool. iii, 10.— Chili, 

 virgulatus Macquart, Dipt. Exot. 4e Suppl. 152, 47, pi. xiv, fig. 11.— "Patrie 



inconnue, probablement le Bresil." 

 xantbopterus Wiedemann, Auss. Zweifl. Ins. il, 120, 6. — Brazil. [Allograpta f 



Sphxrophoria f'\ 



C. — Face in ground-color black ; Melanostomn, etc. 

 ohiquitensis Macquart, Dipt. Exot. 4e Suppl. 154, 52. — Bolivia, 

 mellinoides Macquart, Dipt. Exot. ler Suppl. 137, 33.— Columbia, 

 productus Macquart, Dipt. Exot. 4e Suppl. 1.54, 51, pi. xiv, fig. 13; Blanchard, 



Hist. Fis. y Pol. de Chile, vii, 412; Philippi, Verb. Zool. Bot. Gesellsch. xv, 



746.— Chili. 



D. — Abdomen petiolate, or narrowed basally ; wings often with a dark picture; 

 Baccha, etc. 

 clarapex Wiedemann, Auss. Zweifl. Ins. ii, 124, 13. — Brazil, 

 conjunctus Wiedemann, Auss. Zweifl. Ins. ii, 16, 1. — S. America, 

 flavipennis Wiedemann, Auss. Zweifl. Ins. ii, 123, 12. — Brazil, 

 sargoides Macquart, Dipt. Exot. 4e Suppl. 151, 45, pi. xiv, fig. 9. — Brazil. [Doros .?] 



E. — Syrphiis sensu latiori incertse sedis. 

 auropulveratus Macquart, Dipt. Exot. ii, 2, 99, 20. — Chili. ^ 

 bucepbalus Wiedemann, Auss. Zweifl. Ins. ii, 126, 17. — Brazil, 

 immaculatus Dipt. Exot. ii, 2, 98, 19. pi. xvii, fig. 1. — Brazil. [Abdomen black.] 

 punctatus Macquart, Dipt. Exot. ii, 2, 92, 9.— Chili. 



rubricosus Wiedemann, Auss. Zweifl. Ins. ii, 137, 36. — Brazil. [Ocyjitamus ?] 

 tridentatus Rondani, Ann. Soc. Nat. Modena (2), iii, 24. — Patagonia. 

 viciuas Macquart, Dipt. Exot. ler Suppl. 136, 32. — Brazil. 



