52 DIPTERA 
auxiliary vein separate from first ; hind legs strongest, the anterior 
femora not thichened ; thorax gibbous .— ... pud duc A Mpsae Sr uu VT 
13. Hind legs not raftorial. (Pl. 5, Fig. 46; PI. 8, Fig. 72) . Genus BicELLARIA, Macquart. 
Hind femora much thichened, spinose, hind tibiz geniculate. (Pl. 9, 
Fig.1B. . . . . -.. .- - -. 35... 5. . Ge Honec DP NL 
. GeNUs EUTHYNEURA, MACQUART 
Euthyneura, Macquart, Ann. Soc. Ent. France (1), Vol. 5, p. 517 [1836] (Euthynevra); Walker, Ins. 
Brit. Dipt. Vol. r, p. 111 (1851); Bigot, Ann. Soc. Ent. France (3), Vol. 5, p. 559 (1857); 
Schiner, Fauna Dipt. Austr. Vol. r, p. 82 (1862); Loew, Beschr. Eur. Dipt. Vol. 2, p. 250, note 
(1871); Bigot, Ann. Soc. Ent. France (6), Vol. 9, p. 117 (1889); Melander, Trans. Amer. Ent. 
Soc. Vol. 28, p. 256, 347 (1902); Coquillett, Proc. Ent. Soc. Wash. Vol. 5, p. 250, 260 (1903); 
Melander, Williston's Man. N. Amer. Dipt. 3 ed. p. 225 (1908); Kertesz. Cat. Dipt. Vol. 6, 
p. 109 (1909); Coquillett, Proc. U. S. Nat. Mus. Vol. 37, p. 543 (1910); Lundbeck, Dipt. Dan. 
Vol. 3, p. 209 (1910); Wahlgren, Ent. Tidskr. Vol. 31, p. 43, 102 (1910). 
Anthalia, Coquillett, Proc. Ent. Soc. Wash. Vol. 5, p. 246 (1903); Proc. U. S. Nat. Mus. Vol. 37, 
p. 507 (1910). 
Characters. — Small, rather slender, shining black species with yellow legs, the abdomen 
sometimes pruinose. Head globular, as broad as the thorax, eyes bare, of the male broadly contiguous 
on the front, the upper facets enlarged or not, eyes of the female widely separated ; face short, excised 
by the oral opening but the excision not reaching to the antennz, cheeks obliterated or narrow; ocellar 
triangle of the male prominent, vertical and ocellar bristles not pronounced ; antenna inserted low down 
on the head, lengthened, plainly three-jointed, the last joint large, compressed, conical, with a short 
terminal style; proboscis as long as or longer than the head, rigid, projecting obliquely downward, palpi 
elongate and setose. Thorax not gibbous, bristles not pronounced, no posthumeral, one strong noto- 
pleural, one dorsocentral, several scutellars; pleurz shining. Abdomen of male cylindrical, furnished 
with long hairs, pygidium moderate, comprising a tumid basal part and thick lateral valves clasping 
the stout penis; of the female the abdomen is tapering. the last segments elongated to form a slender 
ovipositor. Legs simple, slender, bristleless, hind femora ciliate above. Wings large, sometimes 
clouded, costa vanishing beyond the fourth vein, its basal bristle present, auxiliary vein weak and 
evanescent, extending close to the first, the first vein ending at three-fifths the wing-length, discal cell 
large, located at the middle of the wing, emitting three posterior veins, sometimes open, in which case 
the fourth vein is furcate, basal cells elongate, the second basal broad and shorter than the first since its 
crossvein is nearly perpendicular, anal crossvein reflexed, abruptly meeting the nearly complete anal 
vein. 
Type species : E. myrlilli (PI. 8, Fig. 82), Macquart' s only species. As noted under 4ntAalía, 
Coquillett would make Gyllenhalli the type of that genus, thus drawing AnAalia into the synonymy. 
SYNOPSIS OF THE AMERICAN SPECIES OF EUTHYNEURA 
.Hodybhak. |... . "Pcr E catu m-unsnPu Meo esc 2. 
Body yellow, a middle dus vitta on mesonotum (Alaska). . . . . . E. cRocara, Coquillett. 
2. Discal cell open, the fourth vein long petiolate, wings opalescent, stigma 
almost obsolete . . . Wal a M TP Md 
Discal cell normally closed ; wings s iyd: Sbdosen ihining black MUI UT QUA DOT Wa Ta 
