NORTH AMERICAN DIPTERA. 319 



? Doliosyrphus Rileyi Williston, Synopsis, 178, pi. viii, fig. 8.— N. America, 

 trifasciatus Macquart (non Say), Dipt. Exot. ii, 2, 39, 14, pi. x, fig. 1. — Brazil, 

 vinetorum Fabricius, Ent. Syst. Suppl. 563, 27 (Syrphus); Syst. Antl. 235, 13 

 {Eristalis): Wiedemann, Auss. Zw. Ins. ii, 163, 15 (id.); Macquart, Dipt. 

 Exot. ii, 2, 41, 16 (id.).— N. and S. America. 

 Eristalis trifasciatus Say, J. Acad. Phil, vi, 165 ; Compl. Wr. ii, 359. 

 Eristalis uvarum Walker, List, etc., iii, 623. 

 Eristalis thoracicus Jaennicke, Neue Exot. Dipt. 91. 



B. — Hind femora not dilated or thickened. 

 assimilis Macquart, Dipt. Exot. ler Suppl. 129, 50; Schiner, Novara Exped. 361. 



— Columbia, 

 bogotensis Macquart, Dipt. Exot. ii, 2, 52, 33 ; v. d. Wulp, Notes from the Leyden 



Museum, v. 79, 9; Tijdschr. v. Ent. xxv, 129. — Bogota, Argentina, 

 chilena Eondani, Archivio por la Zool. iii, 5 (Eristalomyia). — Chili. [Allied to 



Meigeniif] 

 colombicus Macquart, Dipt. Exot. 5e Suppl. 88, 70. — Columbia, 

 concolor Philippi, Verb. Zool. Bot. Gesellsch. xv, 743.— Chili. [Allied to seneusf ^ 

 distinguendus Wiedemann, Auss. Zw. Ins. ii, 191, 55 ; Macquart, Dipt. Exot. ii. 



2, 50, 30. — Brazil, Chili, Montevideo, 

 elegans Blanchard, Hist. Pis. y pol. de Chile, vii, 406, 1, 'pi. iv, fig. 1.— Chili. 



[Schiner, Novara Exped. 361.] 

 fulvitarsis Eondani, Archivio por la Zool. iii, 6. 



Eristalis rufitarsis Macquart, Dipt. Exot. 5e Suppl. 89, 72.— Columbia. [Change 



of name by Eondani.] 

 pusillus Macquart, Dipt. Exot. ii, 2, 54, 37. — Lamana. 

 quadraticornis Macquart, Dipt. Exot. ii, 2, 51, 31, pi. x, fig. 2 ; Blanchard, Hist. 



Pis. y Pol. de Chile, vii, 406; Eondani, Archivio por la Zool. iii; v. d. Wulp, 



Notes from the Leyden Mu.seum, v, 80. — Chili. 

 Eristalis testaceiscutellatus Macquart, Dipt. Exot. 4e Suppl. 138, 61, pi. xiii, fig. 2. 

 xanthaspia Wiedemann, Auss. Zw. Ins. ii, 181, 56, Schiner, Novara Exped. 361. 



-Chili. 



Thoracic dorsum fasciate. 



albifrons Wiedemann, Auss. Zw. Ins. ii, 189, 53. — Brazil. 



annulipes Macquart, Dipt. Exot. ii, 2, 49, 29.— Eio Janeiro. [Compare Macquart, 



Dipt. Exot. ii, 2. 43, under E. cubensis.] 

 oalomera Bigot, Ann. See. Ent. Fr. 1880, 229; ibid. 188i, 337 {Eristalomyia). — 



S. America. [There are apparently two species here.] 

 flavipennis Macquart, Dipt. Exot. ii, 2, 52, 34.— Guiana. 

 pusio Wiedemann, Auss. Zw. Ins. ii, 192, 59.— Brazil, Porto Eico. [Eoedes, Stett. 



Ent. Zeit. 1886, 263.] 

 surinamensis Macquart, Dipt. Exot. ii, 2, 53, 35. — Surinam, Brazil. 



C. — Species incertse sedis. 



angustatus Eondani, Esame d. var. sp. etc. 69. — Brazil. 



bifasciatus Macquart, Dipt. Exot. 5e Suppl. 87, 69.— Brazil. 



chilensis Philippi. Verb. Zool. Bot. Gesellsch. xv, 743.— Chili. 



cognata Eondani, Esame d. var. sp. etc. 69 (? E. agnata). — Brazil. 



inca Bigot, Ann. Soc. Ent. Fr. 1880, 217.— Peru. 



incerta Bigot, Ann. Soc. Ent. Fr. 1880, 222 { Eristalomyia). ~BrA.z\\. 



