348 DIPTERA 
Mem. Soc. Hist. Nat. Espan. Vol. 3, p. 315 [1906] (Tachydromia) ; 
Mitteil. Naturw. Ver. Steiermark, Graz, Vol. 46, p. 84 [1909] 
(Tachydromia) ; Wahlgren, Ent. Tidskr. Vol. 3r, p. 93 [1910] (Tachy- 
dromia); Frey, Acta Soc. Sc. Fenn. Hep Vol. 37 (3), p. 81 
[1913] (Tachydromia). 
* eumelenus, Mik, Wien. Ent. Zeit. Vol, 3, p. 82 [1884] (Tachydromia); Becker, 
Fauna Hernst. Vol. 2 (2), p. 6r, fig. 9, ro [1885] (Tachydromia) ; Strobl, 
Mitteil. Naturw. Ver. Steiermark, Graz, Vol. 29, p. 120 [1892] (Tachy- 
dromia); ibidem, Vol. 34, p. 212 [1898] ( Tachydromia). 
montanus, Frey, Zeitschr. Hym. Dipt. Vol. 7, p. 411 [1907] (Tachydromia) ; 
Medd., Soc. Fenn. Helsingsfors, Vol. 34, p. 21 [1908] ( Tackydromia). 
32. P. baldensis, Strobl, Wien. Ent. Zeit. Vol. 18, p. 81 [1899] (Tachydromia). 
nigrogeniculatus, Bezzi, Bull. Soc. Ent. Ital. Vol. 3o, p. 81 [1899] (Tackydromia). 
var. nígrifemur, Strobl, Wien. Ent. Zeit. Vol. Vol. 18, p. 81 [1899] (Tachydromia). 
33. P. ballistrarius, nov. sp. 
34. P. ballucatus, nov. sp. 
35. P. Becheri, Mik, Wien. Ent. Zeit. Vol. 13, p. 166 [1894] (Tachydromia). 
lateralis, Becker (not Loew), Berl. Ent. Zeit. Vol. 31, p. 137 [1887] (Tacky- 
dromía). 
36. P. bicolor, Meigen, Klassif. Beschr. Eur. Zweifl. Ins. Vol. r, p. 237 [1804] 
(Tachydromia); Fabricius, Syst. Antl. p. 143 [1805] (Tachydromia); 
Meigen, Syst. Beschr Vol. 3, p. 82 [1822] (Tachydromia) ; Macquart, 
Mém. Soc. Sc. Lille, p. 152 [1823] (Tachydromia); Ins. Dipt. N. 
France, Vol. 3. p. 98, pl. 2, f. 4 (1827); Hist. Nat. p. 355 (1834); 
Zetterstedt, Ins. Lappon. p. 549 [1838] (Tachydromia); Loew, 
Progr. Posen, p. 22 [1840] (Tachydromia); 1sis, Vol. 7, p. 551 [1840] 
(Tachydromia); Zetterstedt, Dipt. Scand. Vol. r, p. 276 [1842] 
(Tachydromia); Boitard, Man. Ent. Vol. 3, p. 324 (1843); Walker, 
List Dipt. Vol. 3, p. 5o9 (1849); Scholz, Ent. Zeitschr. Breslau, 
Vol. 5, p. 19, 57 [1851] (Tachydromia); Walker, Ins. Brit. Dipt. 
Vol 1, p. 123 (1851); Bonsdorff, Finl. tváv. Ins. Vol. 1, p. 148 
[1861] (Tachydromia); Schiner, Fauna Austr. Ins. Vol. rz, p. 88 
(1862); Siebke, Nyt Mag. Naturvid. Vol. 14, p. 381, 384 [1866] 
(Tachydromia); Leunis, Synopsis, Vol. 2, p. 401 (1886); Strobl, Mit- 
teil. Naturw. Ver. Steiermark, Graz, Vol. 29, p. 113 [1893] (Tachy- 
dromía); Glasn. Mus. Bosn. Vol. 14, p. 469, var. [1902] (Tachydromia); 
Mitteil. Bosn. Herzeg. Vol. 9, p. 527, var. [1904] (Tachydromia) ; 
Becker, Zeitschr. Hym. Dipt. Vol. 7, p. 117 [1907] (Tachydromia); 
Frey, ibidem, Vol. 7, p. 408 [1907] (Tachydromia) ; Medd. Soc. Fenn. 
Helsingfors, Vol. 34, p. 21 [1998] (Tachydromia); Lundbeck, Dipt. 
Danica, Vol. 3, p. 298, f. 135 [1910] (Tachydromia); Walhgren, Ent. 
Tidskr. Vol. 31, p. 93 [1910] (Tachydromia); Frey, Acta Soc. Sc. 
Fenn. Helsingfors, Vol. 37 (3). p. 77 [1913] (Tachydromia). 
caleeatus, Bonsdorff, Finl. tráv. Ins. Vol. 1, p. 149 [1861] (Tachydromia). 
dichroa, Meigen, Syst. Beschr. Vol. 3, p. 83 [1822] (Tachydromia); Walker, 
List Dipt Vol. 3, p. 509 (1849); Ins. Brit. Dipt. Vol. 1, p. 127 (1851). 
flavipes, Fallen, Empid. p. 6, part [1815] (Tachydromia). 
pallidiventris, Bonsdorff, Finl. tvàv. Ins. Dipt. Vol. 1, p. 148 [1861] (Tachy- 
dromía). 
37. P. bicornis, nov. sp. 
38. P. bivittatus, Macquart, Dipt. N. France, Vol. 3, p. 97 (1827); Hist. Nat. 
Ins. Vol. 1, p. 354 (1834); Meigen, Syst. Beschr. Vol. 7, p. 97 
[1838] (Tachydromia); Boitard, Man. Ent. Vol. 3, p. 328 (1843). 
39. P. brevicoruis, Zetterstedt, Dipt. Scand. Vol. zr, p. 293 [1842] (Tachy- 
dromia) ; Wahlgren, Ent. Tidskr. Vol. 31, p. 94 [1910] (Tachydromia); - 
S. Europe. 
Spain. 
Virginia. 
Washington, Illinois. 
C. Europe, Alps. 
Europe, N. Africa. 
Washington. 
France. 
N. Europe. 
