192 DIPTERA 
13o. R. ferruginea, Fabricius, Syst. Antl. p. 146 [1805] (Hybos); Wiedemann, South America. 
Zool. Mag. Berlin, p. 59, pl. 2, f. 2 [1817] (Macrostemus); Anal. 
Ent. 27 (1824); Auss. Zweifl. Ins. Vol. 2, p. 9 (1830); Bezzi, Nova 
Acta Akad. Naturf. Halle, Vol. 9r, p. 321 (1909). 
131. R. ferruginea, Meigen, Syst. Beschr. Vol. 3, p. 60 (1822); Macquart, C. Europe 
Hist. Nat. Dipt. p. 334 (1834). 
132. R. ficana, Walker, List Dipt. Brit. Mus. Vol. 3, p. 5ot (1849). Canada. 
133. R. filata, Zetterstedt, Dipt. Scand. Vol. r, p. 392 (1842); Verrall, Ent. C. & N. Europe. * 
Mag. London, Vol. 3o, p. 140 (1894); Frey, Acta Soc. Sc. Fenn. 
Helsingfors, Vol. 31 (9). p. 20 (1908); Wahlgren, Ent. Tidskr. 
Vol. 31, p. 56 (1910); Frey, Acta Soc. Sc. Fenn. Helsingfors, 
Vol. 37 (3), p. 21 (1913); Oldenberg, Arch. Naturg. Berlin, Vol. 83, 
A, 6, p. 19 (1919); Frey, Notule Ent. Vol. 2, p. 39. 40 [1922] 
(Pararhamphomyia). 
134. R. filicauda, Lundbeck, Consp. Fauna Groenl. Vol. 2, p. 608, f. (1918). Greenland. 
135. R. fimbriata, Coquillett, Proc. U. S. Nat. Mus. Vol. 18, p. 429 (1895). California. 
136. R. flava, Fallen, Empid. Suec. p. 3o [1816] (Em^is); Meigen, Syst. Europe. 
Beschr. Vol. 3, p. 59 (1822): Macquart, Hist. Nat. Dipt. Vol. 1, 
p. 335 (1834); ?Zetterstedt, Fauna Ins. Lappon. p. 572 (1838) 
(Rhamphomysa); Loew, Isis, Vol. 7, p. 549 (1840); Zetterstedt, Dipt. 
Scand. Vol. 1, p. 438 (1842); Boitard, Man. Ent. Vol. 3, p. 319 
(1843); Walker, List Dipt. Brit. Mus. Vol. 3, p. 503 (1849); Ins. 
Brit. Vol. r, p. 110 (1851); Schiner, Fauna Dipt. Austr Vol. 1, 
P. 97 (1862); Siebke, Nyt. Mag. Naturv. Vol. 14, p. 400 (1866); 
Verrall, Ent, Mag. London, Vol. 19, p. 224 (1883); Strobl, Mitteil. 
Naturf. Ver. Steiermark, Graz, Vol. 29, p. 45 (1892); Lundbeck, 
Dipt. Danica, Vol. 3, p. 65 (1910); Wahlgren, Ent. Tidskr. Vol. 31, 
p. 59, f. 6 (1910); Oldenberg, Arch. Naturg. Berlin, Vol. 83, A, 6, 
p. 15 (1919); Frey, Notulz Ent. Vol. 2, p. 6 [1922) (Holoclera). 
var. bistriata, Strobl, Mitteil. Steiermark, Graz, Vol. 46, p. 58 (1909). C. Europe. 
137. R. flavicoxa, Scholz, Zeitschr. Ent. Breslau, Vol. 5, p. 56 (1851); Schiner, Germany. 
Fauna Dipt. Austr. Vol. r, p. 101 (1862). 
138, R. flavibes, Matsumura, Journal Coll. Sc. Sapporo, Vol. 4, p. 67 (1911); Sachalin. 
—. R. flavipes, Stephens, Syst. Cat. Brit. Ins. Vol. 2, p. 264 (1829), no 
description. 
d R. flavirostris, Walker, List Dipt. Brit. Mus. Vol. 3, p. 5or (1849); Canada, Alaska. 
Coquillett, Proc. Wash. Acad. Sc. Vol. 2, p. 414 (1900). 
140. R. flaviventris, Macquart, Dipt. N. France, Vol. 3, p. 134 (1827); Hist. S. & C. Europe. 
Nat. Dipt. Vol. r, p. 337 (1834); Meigen, Syst. Beschr. Vol. 7, 
P. 91 (1838); Becker, Berl. Ent. Zeitschr. Vol. 31, p. 109 (1887); 
Strobl, Mitteil. Naturf. Ver. Steiermark, Graz, Vol. 29, p. 46 
(1892); ibidem, Vol. 46, p. 58 (1909); Oldenberg, Arch. Naturg. 
Berlin, Vol. 83, A, 6, p. 15 (1919); Frey, Notule Ent. Vol. 2, 
p. 6 [1922] (Holoclera). 
var, bivitiata, Strobl, Mitteil Naturf. Ver. Steiermark, Graz, Vol. 29, p. bn Alps. 
var. wuivilata, Strobl, ibidem, Vol. 29, p. 46 (1892). Alps. 
141. R. flexicauda, Zetterstedt, Dipt. Scand. Vol. r, p. 403 (1842); ibliem, Norway. 
Vol. 13, p. 5014 (1859); Wahlgren, Ent. Tidskr. Vol. 31, p. 57 (1910). 
142. R. flexuosa, Coquillett, Proc, U. S. Nat. Mus. Vol. 18, p. 433 (1895). — Colorado. 
143. R. forcipata, Linnzeus, Fauna Suec. p. 466 [1761] (Empis); Syst. Nat. Europe. 
(ed. 12), Vol. 2, p. 1004 [1767] (Empis); Fabricius, Syst. Ent. p. 8o1 
[1775] (Empis); Sulzer, Abgek. Gesch. Insekt. p. 221, pl. 28, f. 16 
