104. EMP1DAE. 



* femorata Loew, Centur. II, 35. - - Maryland. 

 *gracilis Loew, Centur. II, 44. - - Pennsylvania. 

 *leucoptera Loew, Centur. II, 43. - - Florida. 

 *lutea Loew, Centur. Ill, 33. - - Distr. Columbia. 

 Tnacroptera Loew, Centur. Ill, 32. - - Distr. Columbia. 



migrata Walker, List, etc. Ill, 491. - - Huds. B. Terr. 



* iimtaMlis Loew, Centur. II, 40. - - Illinois. 

 *nigriventris Loew, Centur. II, 38. - - Pennsylvania. 



plebeja Walker, Trans. Ent. Soc. N. S. IV, 148. - - United States 



* seriata Loew, Centur. V. 63. - - White Mts., N. H 



*testacea Loew, Centur. V, 64. - - White Mts., N. H. (the typical spe- 

 cimens are from New Rochelle, N. Y.). 

 transfnga Walker, List, etc. Ill, 492. - - Huds. B. Terr. 

 "tristis Loew, Centur. V, 62. - White Mts., N. H. 

 *trivittata Loew, Centur. II, 39. Illinois. 



* umbrosa Loew, Centur. II, 34. - - Illinois. 

 *unicolor Loew, Centur. II, 37. - - Maryland. 



* velutina Loew, Centur. II, 36. - - Distr. Columbia. 



Hormopeza. 



Zetterstedt, Ins. Lapp. 540; 1840. 



*brevicornis Loew, Centur. V, 65. - - Yukon River, Alaska. 

 *nigricaiis Loew, Centur. V, 66. Yukon River, Alaska. 



Grloma. 



Meigen, System. Beschr. Ill, 14; 1822. 

 Fhthia Walker, List, etc. Ill, 492. - Trenton Falls, N. Y. [,,Is not 



a 6r/0)H" ; Loew in litt.] 



*obscnra Loew, Centur. V, 68. -^ White Mts., N. H. 

 Tufa Loew, Centur. V, 67. - - White Mts., N. H. 



Cyrtoma. 



Meigen, System. Beschr. IV, 1 ; 1824. 



* femorata Loew, Centur. V, 69. - - White Mts., N. H. 

 *halteralis Loew, Centur. II, 46. - - Distr. Columbia. 

 *loiigipes Loew, Centur. II, 47. - - Illinois; Pennsylvania. 

 *pi!ipes Loew, Centur II, 48. - - Illinois. Vid. Nr. 411. 

 *procera Loew, Centur. V, 70. -- Sitka. 



Lcptopcza. 



Macquart, Dipt, du Nord etc.; 1827. 



*flavipes Meigen, System. Beschr. II, 353. - - Europe and North America 

 (Saskatchewan Riv.). 



\ 



SECTION TACHYDROMINA. 



Stilpon. 



Loew, Neue Beitrage VI, 34, line 21 from top; also p. 43; 1859. ( t7n ). 



* varipes Loew, Centur. II, 58. - - Pennsylvania. 



