68 
Y. 
18. 
19. 
20 
21. 
22. 
pes B lE S 
 DIPTERA 
p. 160 (1850); Scholz, Ent. Breslau, Vol. 5 (17), p. 48 (1851) ; Walker, 
Ins. Brit. Dipt. Vol. 1, p. 117 (1851); Zetterstedt, Dipt. Scand. Vol. 11, 
P- 4267 (1852), Vol. 12, p. 4597 (1855), Vol. 13, p. 4979 (1859); Schiner, 
Fauna Dipt. Austr. Vol. 1, p. 82 (1862); Raddatz, Arch. Freund. Naturg. 
Mecklenb. Rostock, Vol. 27, p. 42 (1873); Strobl, Mitteil, Naturw. Ver. 
Steiermark, Graz, Vol. 29, p 94 (1892); Coquillett, Proc. U. S. Nat. 
Mus. Vol. 18, p. 435 (1895); Strobl, Wien. Ent. Zeit. Vol. 18, p. 27 
(1899); Melander, Trans. Amer. Ent. Soc. Vol. 28, p. 258, f. 68 (1902); 
Lundbeck, Dipt. Dan. Vol. 3, p. 206, f. 83, 84 (1910); Wahlgren, Ent. 
Tidskr. Vol. 31, p. 79 (1910); Frey, Acta Soc. Sc. Fenn. Helsingfors, 
Vol. 37 (3), p. 60 (1913). 
tibialis, Zetterstedt, Dipt. Scand. Vol. 1, p. 242 (1842), Vol. 8, p. 2997 (1849); 
Bonsdorf, Finl. tváv. Ins. Dipt. Vol. 1, p. 143 (1861); Siebke, Nyt. 
Mag. Naturvid. Vol. 14, p. 380 (1866). 
var. unicolor, Strobl, Jahrb. Naturhist. Landesmus. Kárnten, Klagenfurt, Vol. 47, 
p. 202 (1901). 
: rugosiventris, Strobl, Mitteil. Naturw. Ver. Steiermark, Graz, Vol. 46, C. Europe. 
P- 73 (1909). 
. serraticosta, White, Proc. Roy. Soc. Tasmania, 1916, p. 245 (1917). Tasmania. 
. seligera, Bezzi, Bul. Soc. Ent. Ital. Vol. 32, p. 82 (1900). S. Europe. 
flavipes, Bezzi (not Meigen), Bul. Soc. Ent. Ital. Vol, 3o, p. 145 (1899). 
. *spinigera, Loew, Bernstein Fauna, p. 41 (1850); Meunier, Miscell. Lower Oligocene, 
Ent. Vol. 7, p. 178 (1899). Baltic Amber. 
. lachydromieformis, Bezzi, Ann. Mus. Hungar. Vol. 2. p. 338 (1904). New South Wales. 
. vitripennis, Brunetti, Rec. Indian. Mus. Vol. 9, p. 31 (1913); Fauna India. 
Brit. Ind. Dipt. Vol. r, p. 363, pl. 4, f. 12, 13 (1920). 
7. GENUS OCYDROMIA, MEIGEN 
Ocydromia, Meigen, Syst. Beschr. Vol. 2, p. 351 (1820); Macquart, Mém. Soc. Sc. Lille, 1823, p. 145 
(1823); Dipt. N. France, Vol. 3, p. 144 (1827); Hist. Nat. Dipt. Vol. z, p. 319 (1834); Zetterstedt, 
Fauna Ins. Lappon, p. 535 (1838); Blanchard, Hist. Nat. Ins, Vol. 3, p. 581 [1840] (Ocydromyia); 
Westwood, Gen. Syn. p. 133 (1840); Zetterstedt, Dipt. Scand. Vol. 1, p. 236(1842); Boitard, Man. 
Ent. Vol. 3, p. 316 (1843); Walker, Ins. Brit. Dipt. Vol. r, p. 118 (1851); Bigot, Ann. Soc. Ent. 
France (3), Vol. 5, p. 560 (1857); Schiner, Fauna Dipt. Austr. Vol. t, p. 81 (1862); Lioy, Atti 
Instit, Venet. 1864, p. 723 (1864); Beling, Arch. Naturg. Berlin, Vol. 48, p. 239 (1882); Bigot, 
Ann. Soc. Ent. France (6), Vol. 9, p. 117 [1889] (Ocydromyia); Coquillett, Proc. U. S. Nat. Mus. 
Vol. 18, p. 390 (1895); Williston, Man. N. Amer. Dipt. 3 ed., p. 74 (1896); Melander, Trans. 
Amer. Ent. Soc. Vol. 28, p. 259 (1902); Coquillett, Proc. Ent. Soc. Wash. Vol. 5, p. 254, 259 
(1903); Melander, Williston, Man. N. Amer. Dipt. 3 ed. p. 225 (1908); Bezzi, Nova Acta Akad. 
Naturf. Halle, Vol. gt, p. 3or (1909); Kertész, Cat. Dipt. Vol. 6, p. 105 (1909); Coquillett, Proc. 
U. S. Nat. Mus. Vol. 37, p. 577 (1910); Lundbeck, Dipt. Dan. Vol. 3, p. 200 (1910); Wahlgren, 
Ent. Tidskr. Vol. 31, p. 43, 79 (1910). j 
Characters. — Slender, shining, blackish or yellow species about three or four millimeters in 
length. Head globular, eyes contiguous above the antenna and subcontiguous on the face, facets 
uniformly small; antennz inserted at the middle of the head, the basal joints small and fused, the third 
joint oval and with a subdorsallong slender hair-like arista; proboscis very short, fleshy, scarcely 
protruding from the oral opening; ocellar triangle not prominent, ocellar bristles small. Thorax short 
but rather highly arched, devoid of pollen and stiff bristles, its hairs very sparse; scutellum villose and 
margined with several bristles; pleurz shining and bare. Abdomen twice as long as the thorax, slen- 
der, cylindrical, pygidium minute, asymmetrical, abdomen of the female with blunt termination, no 
