3l8 CATALOGUE OF NORTH AMERICAN DIPTERA. 



quadrangularis Wheeler and Melander, Biologia, Dipt., i, 374. — Tabasco, Mex. 



Melander, Mon. Empid., i, 253, redesc. 

 rufus LoEW, Cent., i, 24. — N. Y., Chicago. 



Melander, Mon. Empid., i, 253. — Ohio, Ind., Wis. 



N. J.— Smith Cat. 

 simplex Walker, Dipt. Saund., 165, pi. v, f. 7. — U. S. 



Van der Wulp, Tijdschr. v. Ent, x, 139, pi. iii, f. 18-21 (pniicfipcnnis). 

 Wis. 



Loew, Zeitsch. f. Ges. Naturwiss., xxxvii, 115, syn. 



Melander, Mon. Empid., i, 254, f. 86. — Mass. and Ontario to Wis. and 

 111. 



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

 thoracicus Say, Jour. Acad. Sci. Phil., iii, 76; Compl. Works, 11, 68 (Hybos). — 

 Pa. 



Wiedemann, Auss. Zw., i, 538 (id.). 



Macquart, Dipt. Exot., i, 2, 156, pi. xiii, f. i (id.). — Pa. 



Melander, Mon. Empid., i, 254, f. 84. — Pa. to Kans. 



N. J.— Smith Cat. 



SYNDYAS. 



LoEW, Dipterenfauna Siidafrika's, 260, i860. 



OsTEN Sacken, Cat., 240, 1878. 



Melander, Mon. Empid., i, 254, 1902, def. and table. 

 dorsalis Loew, Cent., i, 26. — N. Y. 



Melander, Mon. Empid., i, 254. — 111. 

 polita LoEW, Cent., i, 27. — Carolina. 



Melander, Mon. Empid., i, 254, f. 83. — Mass., Ga., Ala., La., Kans., Ohio, 

 Mich. 



HYBOS. 



Meigen, Illig. Mag., 11, 269, 1803; Syst. Beschr., 11, 246, 1820. 



Schiner, Fauna Austr., i, 77, 1862. 



OsTEN Sacken, Cat, 240, note on Walker's types. 



Coquillett, Revis. Empid., 437, 1895, table of species; ibid. (Euliybus). 

 [Wh. and Mel.] 



Wheeler and Melander, Biologia, Dipt, i, 372, 1902, table of Mexican 

 species. 



Melander, Mon. Empid., i, 245, 1902, def. and table of species, 

 dimidiata Bellardi, see sequens. 

 dimidiata Loevv, see electus. 

 duplex Walker, see triplex. 



electus Melander, Mon. Empid., i, 245, change of name ; 247, desc. — Tifton, Ga. ; 

 New Bedford, Mass. 



Loew, Wien. Ent. Monatsch., v, 36 {dimidiata, preoc). — Cuba. 



Williston, Trans. Ent Soc. Lond., 1896, 307, pi. xi, f. 83 {dimidiata 

 Lw.).— St Vincent, W. I. 

 mellipes Wheeler and Melander, Biologia, Dipt., i, 373. — Guerrero, Mex. 



Melander, Mon. Empid., i, 247, f. 78, redesc. 

 purpureus Walker, see triplex. 

 reversus Walker, List, iii, 487. — Trenton Falls, N. Y. 



Melander, Mon. Empid., i, 248. — Jamesburg, N. J. 

 sequens Melander, Mon. Empid., i, 245, change of name; 249, desc. 



Bellardi, Saggio, 11, 97 {dimidiata, preoc). — Mex. 



