CATALOGUE OF NORTH AMERICAN DIPTERA. 325 



tridentata Coquillett, Proc. U. S. N. M., xxiii, 609. — Delaware Co., Pa. 



Melander, Mon. Empid., i, 301, f. 132. 



N. J.— Smith Cat. 

 vaginifer Melander, Mon. Empid., i, 352. — D. C. 

 valentis Coquillett, Revis. Empid., 402. — N. Cal. 



Melander, Mon. Empid., i, 320, f. 138.— Cal. 

 varipes Loew, Cent., i, 34. — Pa. 



Melander, Mon. Empid., i, 307. 



White Mts., N. H. — Slosson; Montreal — Chagnon. 

 violacea Loew, see Lamprcmpis. 



virgata CoQUiLLErr, Revis. Empid., 408; Proc. Wash. Acad. Sci., 11, 408, oc. — 

 Wash. ; Alaska, common. 



Melander, Mon. Empid., i, 312, f. 108. 

 xochitl Wheeler and Melander, Biologia, Dipt., i, 370. — Chilpancingo in Guer- 

 rero, Mex. 



Melander, Mon. Empid., i, 292, f. 118, redesc. 



HILARA. 



Meigen, Syst. Beschr., iii, i, 1822. 



Schiner, Fauna Austr., i, 112, 1862. 



Coquillett, Revis. Empid., 394, 1895, table of species. 



Melander, Mon. Empid., i, 262, 1902, del and table of species. 

 atra Loew, Cent., 11, 42. — 111. 



Melander, Mon. Empid., i, 266.— Mass., Col, N. M. 



Beulah, N. M. — Skinner. 

 aurata Coquillett, Proc. Wash. Acad. Sci., 11, 411. — Kukak Bay, Alaska, and 

 Eastport, Me. 



Melander, Mon. Empid., i, 269. 

 baculifer Melander, Mon. Empid., i, 271, f. 96. — Tifton, Ga. 

 basalis Loew, Cent., 11, 45. — 111. 



Melander, Mon. Empid., i, 267. 

 bella Melander, Mon. Empid., i, 271, f. 94. — Mass. 

 brevipila Loew, Cent., 11, 41. — 111. 



Melander, Mon. Empid., i, 266. 

 cana Coquillett, Revis. Empid., 395. — S. Cal. 



Melander, Mon. Empid., i, 269. 

 carbonaria Melander, Mon. Empid., i, 272. — New Bedford, Mass. 

 congregaria Melander, Mon. Empid., i, 272. — Monterey Co., Cal. 



Mentioned with nugax as " Hilara species " by Wheeler, Archiv. f. 



Entwickelungsmechanik der Organismen, 1899, viii, 375, where their habit 



of flying in swarms is discussed. 

 femorata Loew, Cent., 11, 35. — Md. 



Melander, Mon. Empid., i, 264. — N. J., Ohio, Wis. 



White Mts., N. H.— Slosson; N. J.— Smith Cat. 

 gracilis Loew, Cent, 11, 44. — Pa. 



INIelander, Mon. Empid., i, 266. 



White Mts., N. H.— Slosson; N. J.— Smith Cat. 

 johnsoni Coquillett, Revis. Empid., 395. — Ala. 



Melander, Mon. Empid., i, 268.— Eufala, Ala. 

 leucoptera Loew, Cent., 11, 43. — Fla. 



Melander, Mon. Empid., i, 266. 



N. J. — Smith Cat. ; Charlotte Harbor, Fla. — Johnson. 



