200 DIPTERA 
249. R. nitida, Macquart, Dipt. N. France, Vol. 3, p. 135(1827); Hist. Nat. C. Europe. 
Dipt. Vol. zr, p. 337 (1834); Meigen, Syst. Beschr. Vol. 7, p. 92 
(1838); Zetterstedt, Dipt. Scand. Vol. r, p. 401, note (1842). « 
250. R. uilidicollis, Frey, Acta Soc. Sc. Fenn. Helsingfors, Vol. 37 (3), p. 26 Russia, Germany. 
(1913); Notulz Ent. Vol. 2, p. 44 [1922] (Pararkamphomyia). 
251. R. nitidivitlata, Macquart, Dipt. Exot. Suppl. Vol. t, p. 97 (1846). Texas. 
252. R. nitidolineata, Frey, Acta Soc. Sc. Fenn. Helsingfors, p. 37 (10), p. 8  N. Russia, Siberia. 
(1913); Notulz Ent. Vol. 2, p. 69 (1822). 
253. R. nitidula, Zetterstedt, Dipt. Scand. Vol. r, p. 400 (1842); ibidem, C. & N. Europe. 
Vol. 8, p. 3036 (1849); Bonsdorff, Finl. tváv. Ins. Dipt. p. 170 : 
(1861); Beling, Arch. Naturg. Berlin, Vol. 48, p. 216 (1882); Frey. 
Acta Soc. Sc. Fenn. Helsingfors, Vol. 31 (9), p. 19(1908); Wahlgren, 
Ent. Tidskr. Vol. 3r, p. 57 (1910); Frey, Acta Soc. Sc. Fenn. 
Helsingfors, Vol. 37 (3). p. 3o (1913); Notulz Ent. Vol. 2, p. 73 
(1922). 
zi Zetterstedt, Fauna Ins. Lappon. p. 566 [1838] (Rhamphomyza). 
254. R. niveibennis, Zetterstedt, Fauna Ins. Lappon. p. 570 [1838] (Rhamfho- N. & C. Europe. 
myzsa); Bonsdorff, Finl. tváv. Ins. Dipt. Vol. r, p. 171 (1861); Scholz, 
Zeitschr. Ent. Breslau, Vol. 5 (19), p. 55 (1861); Schiner, Fauna 
Dipt. Austr. Vol. r, p. 99 (1862); Strobl, Mitteil. Nat. Ver. Steier- 
mark, Graz, Vol. 34, p. 199 (1897); Wahlgren, Ent. Tidskr. Vol. 31, 
P. 58(t910); Frey, Acta Soc. Sc. Fenn. Helsingfors, Vol. 37 (3), 
P. 19 (1913); Oldenberg, Arch. Naturg. Berlin, Vol. 83, A, 6, p. 17 
(1919); Frey, Notulz Ent. Vol. 2, p. 37 [1922] (Pararhamphomyia). 
albicheta, Frey, Acta Soc. Sc. Fenn. Helsingfors, p. 31 (9), 20 (1908). 
lacteipennis, Zetterstedt, Fauna Ins. Lappon. p. 570 [1838] (Rhamphomysa) ; 
Dipt. Scand. Vol, 1, p. 410 (1842); Bonsdorff, Finl. tvàv. Ins. Dipt. 
Vol. x, p. 171 (1861); Frey, Acta Soc. Sc. Fenn. Helsingfors, Vol. 31 (9), 
p. 20 (1908). 
255. R. nodijes, Fallen, Empid. Suec. p. 25 [1816] (Empis); Meigen, Syst. C. & N, Europe. 
Beschr. Vol. 3, p. 5o (1822); Oldenberg, Arch. Naturg. Berlin, 
Vol. 83, A, 6, p. 16 (1919); Frey, Notule Ent. Vol. 2, p. 7 
[1922] (Choreodromia). 
spissirostris, Fallen, Empid, Suec. p. 31 [1816] (Empis); Meigen, Syst. Beschr. 
Vol. 3, p. 57 (1822); Zetterstedt, Fauna Ins. Lappon. p. 563 (1838); 
Dipt. Scand. Vol. 1, p. 390 (1842); ibidem, Vol. 8, p. 3031 (1849); 
Scholz, Zeitschr. Ent. Breslau, Vol. 5 (19), p. 54 (1851); Bonsdorff, 
Finl. tváv. Ins. Dipt. Vol. , p. 168 (1861); Schiner, Fauna Dipt. Austr. 
Vol. 1, p. 98 (1862); Becker, Acta Soc. Sc. Fenn. Helsingfors, Vol. 26 (9), 
17, pl. 1, f. 9, 10 (1900); Frey, ibidem, Vol. 31 (9), p. 18 (1908);  * 
Lundbeck, Dipt. Dan. Vol. 3, p. 41, f. 8 (1910); Wahlgren, Ent. Tidskr. 
Vol. 31, p 55, f. 5 (1910); Verrall, Ent. Mag London, Vol. 48, p. 24 
(1912); Frey, Acta Soc. Sc. Helsingfors, Vol. 37 (3), p. 11 (1913). : 
256. R. Nordquistii, Holmgren, Nov. Sp. Ins. Nov. Zeml. p. 23(1881); Ent. Nova Zemla. 
Tidskr. Vol. 4, p. 164 (1883). 
R. novecarolina, Beutenmueller, Insecutor Insc. Mens. Vol. t, p. 13o N. Carolina. 
(1913). 
258. R. nox, Oldenberg, Arch. Naturg. Berlin, Vol. 82, r, p. 155 (1916); Germany. 
Frey, Notulz Ent. Vol. 2, p. 41 [1922] (Pararkamphomyia). 
R. nubigena, Bezzi, Ann. Mus. Hungar. Vol. 2, p. 200 (1904); Frey, Tyrol. 
Notule Ent. Vol. 2, p. 76 (1922). 
R. obscura, Eversmann, Bull. Soc. Nat. Moscou, Vol. 7, p* 424 (1834), 
no description. 
R. obscura, Loew (not Zetterstedt), Bemerk. Posen. Gegend Art. Zweifl. C. Europe. 
Gatt. p. 21, f. 23, 27 (1840); Isis, p. 548, f. 23-27 (1840); Schiner, 
Fauna Dipt. Austr. Vol. r, p. ror (1862). 
