CATALOGUE OF NORTH AMERICAN DIPTERA. JO5 



GERSTAECKER, Zweite Deutsche nordophlfahrt, Leipzig, 1874, oc. in Green- 

 land. 



umbrosa LOEW, Cent., iv, 31. La. 

 unicincta DOANE, Jour. N. Y. Ent. Soc., ix, 115. Moscow and Collins, Ida.; 



Pullman and Keyport, Wash. 



usitata DOANE, Jour. N. Y. Ent. Soc., ix, 124. Tokeland, Wash.; Corvallis, Ore. 

 valida LOEW, Cent., iv, 21. Mass., 111. 



N. Y. O. S. ; N. J. Smith Cat. 



varia DOANE, Jour. N. Y. Ent. Soc., ix, 122. Olympia and Seattle, Wash 

 versicolor LOEW, Cent., iv, 17. 111. 



virgatula WILLISTON, Biologia, Dipt., Dipt., Suppl., 228. Morelos, Mex. 

 virgo OSTEN SACKEN, Biologia, Dipt., i, 14. Durango, Mex. 

 vitrea VAN DER WULP, Tijdschr. v. Ent., xxiv. 150, pi. xv, f. 5. Quebec. 



DIXID^E. 



DIXA. 



MEIGEN, Syst. Beschr., i, 216, 1818. 

 MACQUART, Hist. Nat. Dipt., i, 116, 1834. 

 ZETTERSTEDT, Dipt. Scand., x, 4048, 1851. 

 SCHINER, Fauna Austr., ii, 641, 1864. 



JOHANNSEN, Bull. 68, N. Y. State Mus. ; 429, 1903, table of species. 

 MEINERT, De Eucephale Myggelarver, 1886, 452, full discussion of trans- 

 formations in European species. 

 centralis LOEW, Cent., in, 3. N. Y. 



? WALKER, List, i, 85 (nova) [O. S., with a doubt]. Martin Falls, Canada, 

 clavata LOEW, Cent., vm, i. Mass. 

 clavulus WILLISTON, Trans. Ent. Soc. Lond., 1896, 298, pi. x, f. 73. St. Vincent, 



W. I. 

 JOHANNSEN, Bull. 68, N. Y. State Mus., 429 duodcsta') ; syn. in Ent. News, 



xiv, 302. N. Y. 

 fusca LOEW, Cent., in, 5. N. Y. 

 marginata LOEW, Lent., in, i.- D. C. 

 notata LOEW, Cent., in, 4. Md. 



N. J. Smith Cat. 

 terna LOEW, Cent., in, 2.- N. Y. 



? WALKER, List, i, 85 (recens) [O.S., with a doubt]. N. Y. Factory, Huds. 



B. Terr. 

 venosa LOEW, Cent., x, i. Tex. 



PSYCHODIM:. 



TOWNSEND, Trans. Amer. Ent. Soc., xix, 149, 1892, table of N. A. genera. 

 KINCAID, Ent. News, x, 30, 1899, table of genera. 



KELLOGG, Ent. News, x, 46, 1899, desc. of an aquatic larva, and references to lit- 

 erature of immature stages. 



PERICOMA. 



WALKER, Ins. Brit., in, 256, 1856. 

 SCHINER, Fauna Austr., n, 632, 1864. 



albitarsis WILLISTON, Trans. Ent. Soc. Lond., 1896, 284, pi. ix, f. 52. St. Vin- 

 cent, W. I. 



bipunctata KINCAID, Ent. News, x, 34, f. 8. Seattle, Wash.; Santa Cruz Mts., 

 Cal. 



