264 DIPTERA 
Vol. tr, p. 269 (1842); Walker, Ins. Brit. Dipt. Vol. 1, p. 142 (1851); Rondani, Dipt. Ital. Vol. r, 
p. 148 (1856); Bigot, Ann. Soc. Ent. France (3), Vol. 5, p. 563 (1857); Schiner, Fauna Dipt. 
Austr. Vol. r, p. 86 (1862); Coquillett, Proc. U. S. Nat. Mus. Vol. 37, p. 590 (1910); Wahlgren, 
Ent. Tidskr. Vol. 31, p. 45 (1910); Brunetti; Fauna Brit. Ind. Dipt. Vol. r, p. 367 (1920). 
Chelipoda, of authors, Mik, Wien. Ent. Zeit. Vol. 7, p. 299, 327 (1888); Coquillett, Proc. Ent. Soc. 
Wash. Vol. 5. p. 247, 261 (1903); Melander, Williston's Man. N. Amer. Dipt. p. 223 (1998); 
Bezzi, Nova Acta Akad. Naturf. Halle, Vol. 91, p. 299 (1909); Kertész, Cat. Dipt. Vol. 6, p. 117 
(1909); Coquillett, Proc. U S. Nat. Mus. Vol. 37. p. 522 (1910) ; Lundbeck, Dipt. Dan. Vol. 3, 
p. 245 (1910); Bezzi, Ann. Mus. Hungar. Vol. 10, p. 476 (1912). 
Hemerodromia, of authors, Westwood, Gen. Syn. p. 132 (1840); Coquillett, Proc. U. S. Nat. Mus. 
Vol. 37, p. 55o (1910). 
Lepidomyia, Bigot (not Loew, 1864, Syrhidz). Ann. Ent. Soc. France (3), Vol. 5, p. 557, 563 [1857] 
(Lepidomya); Róder, Wien. Ent. Zeitschr. Vol. 6, p. 169 (1887); Mik, Wien. Ent. Zeitschr. Vol. 7, 
p. 299, 327 (1888); Bigot, Ann. Soc. Ent. France (6), Vol. 9, p. 124 (1889); Coquillett, Proc. 
Ent. Soc. Wash. Vol. 5, p. 252 (1903); Proc. U. S. Nat. Mus. Vol. 37, p. 559 (1910); Wahlgren, 
Ent. Tidskr. Vol. 3t, p. 45. 85 (1910); Engel, Deutsche Ent. Zeitschr. p. 3 (1918). 
Thamnodromia, Mik, Wien. Ent. Zeit. Vol. 5, p. 278 (1886); Róder, Wien. Ent. Zeit. Vol. 6, p. 169 
(1887); Mik, Wien, Ent. Zeit. Vol. 7, p. 299, 327 (18858); Bigot, Ann. Soc. Ent. France (6), Vol 
9, p. 123 (1889); Coquillett, Proc. Ent. Soc. Wash. Vol. 5, p. 258 (1903); Proc, U. S. Nat. Mus. 
Vol. 37, p. 614 (1910). 
Characters. — Slender, reddish yellow species with strongly raptorial front legs — Head 
globular, but a little longer in an obliquely downward direction, the upper occiput small, the front. 
broad ; eyes bare, large, with their lower forward facets somewhat enlarged, thus making the face and 
cheeks narrow. | Occiput hairy below but with a single row of setze above, the uppermost three pairs of 
which form the vertical bristles; ocelli large, one pair of strong ocellar bristles and usually behind them 
a pair of lesser ocellars; mouth-opening small and circular, proboscis much shorter than the height of 
the head, slender and slightly incurved, palpi very small, cylindrical and tipped with several fine hairs : 
antenne plainly three-jointed, inserted close together and below the middle of the head, the last joint 
compressed conical. with a rather thick, long, two-jointed arista, the basal joint of which is minute. 
Thorax elongate, quadrate, narrower in front than the head, scarcely convex and in front of the small 
scutéllum even flattened, coated with more or less evident gray pollen, humeri small, prothorax visible 
from above; macrochztze well developed, one strong posthumeral (possibly to be considered as the 
foremost dorsocentral), no humeral, two widely separated pairs of dorsocentrals. the anterior of which 
is sometimes reduced, two scutellars, one supraalar, no postalar, no notopleural, but sometimes some 
notopleural setulze, only a single prescutellar pair of the acrostichal setulze present : metapleure with 
two or three upward-directed setulz,, the mesosternum in profile angulate in the middle, prosternum 
ridged between the coxee. Abdomen more or less cylindrical, consisting of seven segments and the 
genitalia, male with a large to very large epipygium which comprises a strongly compressed, carinate 
lower part bearing a pair of forcipate valves directed forward over the abdomen; ovipositor very short, 
fleshy, with two styles. Front coxa slender and long, over twice as long as the posterior pairs, usually 
(Chelipoda, s. str.) with a basal spine directed forward, front femora incrassate, biseriately spinulose 
beneath, and in front and back seriately setose, front tibize fitted to close against their femora, no 
terminal spine or tibial spurs, posterior legs simple, pulvilli minute. Wings margined behind by the 
prolongation of the costa, in front with a basal costal bristle and with costal hairs, no stigma, auxiliary 
vein straight, parallel with the costa and vanishing apically, first vein short, second vein long, third 
