136 SYRPH1DAE. 



Tropidia. 



Meigen, System. Besclir. Ill, 346; 1822. 



albistylnm Macqtiart, Dipt. Exot. 2" Suppl. GO, I; Tab. II, f. 10. - 

 North America. 



*niainillata Loew, Centur. I, 68. - - Illinois. 



*(juadratu Say, Amer. Ent. I; Tab. VIII; Compl. Wr. I, 14 (Xylota); 

 Wiedemann, Auss. Zw. II, 101. 6 (id.); Macquart, Dipt. Exot. II, 

 272. - United States (Massachusetts, White Mts., N. H.; New 

 York); California (0. Sackeu, Western Dipt., 338). 



Crioi-rliiua. 



Criorhinq Hoffmannsegge (in lift.), was introduced as a subgenus 



of Milesia in Meigen, System. Beschr. Ill, 236 ; 1822 , appears as 



such in St. Fargeau et Serville, Encycl. Meth. X, 518, 1825; 



adopted as a genus in Macquart, Hist. Nat. Dipt. I, 497; 1834. 



*analis Macquart, Dipt. Exot. II, 2, 79; Tab. XV, f. 2 (Miles-id). 



North America (Marq ). 



*armillata 0. Sacken, Bull. Buff. Soc. N. H. Ill, 68 (reproduced in 

 the note ( 24 ). 



Crioprora. 

 nov. gen. ( 241 ). 



* cyanogaster Loew, Centur. X, 51; (Braclnjpftlpiis). -- Pennsylvania. 



* alopex 0. Sacken, Western Dipt, 338 (Pocotu). - - California. 

 *cyanella 0. Sacken, Western Dipt., 339 (Pocota.) -- California. 



Brachypalpus. 



Macquart, Hist. Nat. Dipt. I, 523; 1834. 



Ainithaon Walker, List, etc. Ill, 567 (Milesid). -- North Carolina. ( 54 -). 

 *frontosus Loew, Centur. X, 50. Distr. Columbia, Texas, Massachusetts. 



(?) Xylottt Oaru* Walker, List. etc. Ill, 558. - - Trenton Falls. 

 *verbosus (Harris) Walker, List, etc. Ill, 568. Connecticut, Canada, 



Virginia. 

 Mtisca iomentosa Swederus, Vetensk. Ak. Nya Handl. ; 1787. 



Xylota. 



Meigen, Sytem. Beschr. Ill, 211; 1822. ( 24S ). 



Aepalius Walker, List, etc. Ill, 557. - - Georgia. ( 244 ). 



Authreas Walker, List, etc. Ill, 556. - Trenton Falls, New York. 



* angustiyentris Loew, Centur. VI, 58. Illinois ; Western New York. 

 Baton Walker, List, etc. Ill, 554 (,,perhaps synon. with ejuncida" 



Wk.). Florida; Nova Scotia. 

 *barbata Loew, Centur. V, 40. - - Sitka. 

 *bicolor Loew, Centur. V, 39. - Illinois (Lw.); Englewood, N. J. 



(0. S.). 

 *cbalybea Wiedemann, Auss. Zw. II, 98. No locality (Wied.) 



Northern and Middle States (Illinois; Pennsylvania. 



