59 



POLYDONTA. 



Macguart, Dipt. Exot. 4e Suppl. p. 144. 



*carv!pes Wiedemann, Auss. Zw. II, p. 149, 3 {Merodon). Nortliern States aud 

 British Possessions. 



Polydonta hicolor Macquart, Dipt. Exot. 4e Suppl. p. 144, 1 ; Tab. XIII, fig. 6 



{male). 

 Helophilus albiceps Macquart, Dipt. Exot. ler Suppl. p. 132, 9; Tab. XI, fig, 



7 (female). 

 Merodon morosus Walker, List, etc.. Ill, p. 599 {female). 



TROPIDIA. 



Meigen, Syst. Besclir. Ill, p. 348, 1822. 



alfcistylum Macquart, Dipt. Exot. 2e Suppl, p. 00, I; Tab. II, fig. 10. North 

 Amarica. 



*mamillata Loew, Centur. I, 68. Illinois. 



*(iuadrata *Sa2^, Amer. Entom. I.Tab. VIII(X^?cito); Wiedemann, Auss. Zw. II, 

 p. 101, 6 {id.); Macquart, Dipt. Exot. II, p. 272, United States (Massa- 

 chusetts, White Mta., N. II.; New York). 



CRIORRHINA. 



Criorliina Hoffmannsegge {in litt), was introdced as a subgenus Milesia 

 in Meigen, Syst. Beschr. Ill, p. 236, 1822; appears as such in St. Far- 

 geau et Serville, Sncycl. Method. X, p. 518, 1825; adopted as a genus in 

 Macquart, Hist. Nat. Dipt. I, p. 497, 1834. 



*analis Macquart, Dist. ^Exot. II, 2, p. 79, Tab. XV, fig. 3 {3Iilesia). North 

 America (Macq.) 



■^armillata n. sp. See in the Appendix. Quebec, Canada. 



BRACHYPALPUS. 



Macquart, H\Bt. Nat. Dipt. I, p. 523, 1834. 

 "cyanog'aster Loeio, Centur. X, 51. Pennsylvania. 



*frontosii9 Zoew, Centur. X, 50. Distr. Columbia; Texas; Mas.s.<ichusetts. 

 *Yerbosns {Harris) Walker, List, ete. Ill, p. 5G8. Connecticut; Canada; Vir- 

 ginia. 



Musca tomentosa Swederus, Vetensk. Ac. Nya. Handl., 1787. 



XYLOTA. 



Meigen, Syst. Beschr. Ill, p. 211 ; 1822. 

 Aepalius TT''a?^■e?•, List, etc.. Ill, p. 557. Georgia. 

 Anthreas Walker List, etc.. Ill, p. 550. Trenton Falls, N. Y. 



