DEL DOTT. E. OIGLIO-TOS 



381 



Eristalis diminutus Walker, ibid., p. 622. 



— Sackenis Bigot, Ann. Soc. Entom. Fr., 1878, p. 224. 



— fulvipes Bigot, ibid., p. 225. 



— persa Williston, Biol. centr. amer., Ili, p. 58, 1. 



— ochraceus Williston, ibid., p. 60, 6. 



— trigonus Williston, ibid., p. 61, 8. 



— cosmius Sciiiner, Reis. Novara, p. 362; Williston, ibid., p. 61, 9. 



— albifrons Wiedemann, loc. cit., II, p. 189; Williston, ibid., p. 62, 11. 



— fasciatus Wiedemann, loc. cit., p. 173; Williston, ibid., p. 62, 13. 



— — ? Williston, ibid., p. 63, 14. 



— — ? Williston, ibid., p. 64, 18. 



— minutalis Williston, ibid., p. 64, 19. 

 ? Williston, ibid., p. 65, 21. 



Pteroptila crucigera Fabricius, Syst. Antl., p. 189 (Milesia); Macquart, Dipt. exot., 



l er suppl., p. 134 (Milesia). 

 Helophilus formalis Walker, List, of Dip. Ins., ecc., HI, p. 603. 



— latifrons Loew, Cent. IV, n. 73, in Beri. Entom. Zeits., 1863, p. 313; Williston, 



loc. cit., p. 68, 1. 

 Mallota (?) Championi Williston, loc. cit., p. 69, 1. 



— Sackeni Williston, ibid., p. 70, 2. 



— margarita Williston, ibid., p. 70, 3; tab. LI, fig. 7, la, Ib. 



— Smithi Williston, ibid., p. 70, 4, tab. II, fig. 8, Sa, Sb. 



Crioprora villosa Bigot, Bull. Soc. Entom. Fr., 1882, p. cxxix; Annales, id. id., 1883, 



p. 356 (Romaleosyrphus). 

 Eurhinomallota metallica Bigot, ibid., p. lxvti. 



Xylota arcuata Say, Journ. Acad. Philadelphia, VI, p. 162; Complete Writ., LT, p. 357. 



— subcostalis Walker, Trans. Ent. Soc. Lond., n. ser., V, p. 291. 



— rufipes Williston, Biol. Centr. Amer., UT, p. 71, 1. 



— pauxilla Williston, ibid., p. 71, 2, tab. TT, fig. 9, 9a, 9b. 



— stenogaster Williston, ibid., p. 72, 3. 



— brachijgaster Williston, ibid., p. 72, 4. 



Syritta vagans Wiedemann, Auss. zweifl. Ins., II, p. 101; — Williston, loc. cit., 

 p. 73, 1; = americana Schiner, Reis. d. Novara, p. 367; = mexicana Bigot, Ann. 

 Soc. Ent. Fr., 1883, p. 539. 



Ceriogaster auricaudata Williston, loc. cit., p. 73. 



Spilomyia pleuralis Williston, North. Am. Syrph., p. 247. 



— pallipes Bigot, loc. cit., 1883, p. 352. 



— (Mixtemyia) ephippium Osten Sacken, Bull. Bufi . Soc, HI, p. 70. 



