NORTH AMERICAN DIPTERA. 321 



H£L,OPIIIL,lIfii. 



Meigen, Illiger's Magazine, ii, 274, 1803. 



annulipes Macquart, Dipt. Exot. 4e Sii])pl. 142, 12. — America, 

 rostratus ^Maoquart, Dipt. Exot. 1, Siippl. 131, 8, pi. xi, fig. 8. — New (iranada. 

 pictus Philippi, Verh. Zool. But. Gesellsch. xv, 743. — Chili, 

 cyanescens Macquart, Hist. Nat. Dipt, i, 511. — Brazil. [A doubtful Helophilus.] 

 See Myiolepta for H. Inctuosus Big. 



TKOPIDIA. 



Meigen, Syst. Beschr. iii, 346, 1822. 



flavimana Philippi, Verh. Zool. Bot. Gesellsch. xv, 745.— Chili, 

 nigricornis Philippi, Verh. Zool. Bot. Gesellsch. xv, 745. — Chili, 

 rubricornis Pliilippi, Verh. Zool. Bot. Gesellsch. xv, 744. — Chili. 



ORTHOI.OPHUS. 



Bigot, Bullet. Soc. Ent. Fr. 1882. 

 notatus Bigot, Ann. Soc. Ent. Fr. 1884, 535.— Chili. 



X\L,OTA. 



Meigen, Syst. Beschr. iii, 211, 1822. 



aurifacies Bigot?; Schiuer, Novara Exped. 360. — Chili. 



hivittata Bigot, Ann. Soc. Ent. Fr. 1883, 546.— Chili. 



COErulea Eondani, Archivio por. la Zool. iii, 8. — Chili. 



chloropyga Schiner, Novara Exped. 366. — Columbia. 



latitarsata Macquart, Dipt. Exot. ii, 2, 73, 2, pi. xiv, fig. 1. — S. America? 



plagiata Wiedemann, Auss. Zw. Ins. ii, 98, 2. — Brazil. 



Genus novum ? 



coarctata Wiedemann, Auss. Zw. Ins. ii. 100, 4. — Brazil. [The petiolate abdomen 

 and carinate face will require this to be placed in some other genus than 

 Xylota.] 



Planes, Eondani. Archivio por la Zool. iii, 9, 1864. 



vagans Wiedemann, Auss. Zw. Ins. ii, 101, 7 ; Eondani, Esam. d. var. sp. etc. 71 ; 

 Eondani, Archivio por la Zool. iii, 9 {Planes). — Brazil. [Separated from 

 Xylota by Eondani on account of the elongate third joint of the antennsE.] 



SEIVOOASTER. 



Macquart, Hist. Nat. Dipt, i, 519, 1834. 



dentipes Fabricius, Ent. Syst. iv, 297. 68, % {Syrphus) ; Entom. Syst. Suppl. 558, 



5 (MuUo) ; Syst. Antl. 194, 25 (Milesia) ; Wiedemann, Auss. Zw. Ins. ii, 108 



6 {Milesia). — S. America. 



TRANS. AMER. ENT. SOC. XIII. (41) DECEMBER, 1886. 



